#Super Keyword in Java With Example | Explore Tumblr posts and blogs

anantradingpvtltd · 2 years ago

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Price: [price_with_discount] (as of [price_update_date] - Details) [ad_1] The length of this book is 200 pages; you may not complete reading this book in 8 hours. About This Book "JAVA in 8 hours" is a textbook for high school and college students; it covers all essential JAVA language knowledge. You can learn complete primary skills of JAVA programming fast and easily. The textbook includes a lot of practical examples for beginners and includes exercises for the college final exam, the engineer certification exam, and the job interview exam. “JAVA in 8 hours” is a useful textbook for beginners. The straightforward definitions, the plain examples, the elaborate explanations and the neat layout feature this helpful and educative book. You will be impressed by its distinctive and tidy writing style. Reading this book is a great enjoyment! Note This book is only suitable for programming beginners, high school students and college students; it is not for the experienced programmers. Table of Contents Chapter 1 What is Java? Java Program Java IDE Install Java Execute Java Program Java Comments Output Commands Escaping Characters Java Keywords Data Types Create a Variable Arithmetical Operators Logical Operators Assignment Operators Comparison Operators Conditional Operator Hands-on Project: Calculation Summary Chapter 2 If Statement If-else Statement Switch Statement For Loop While Loop Do-While Loop Break Statement Continue Statement Boolean-Expression Hands-on Project: Run 100 Times Summary Chapter 3 Create an Array (1) Create an Array (2) Array Length Element Value Sort Array Elements Math Methods Ceil ( ) & Floor ( ) Max ( ) & Min ( ) pow ( ) & sqrt ( ) Math.PI & random( ) Hands-on Project: Start with Zero Summary Chapter 4 String Length String Connection String Comparing Extract a Character Locate a Character Extract a Substring Case Change Character Replace String Type & Space StringBuffer Hands-on Project: True or False Summary Chapter 5 Method Method & Arguments Return Value Class Definition Object Declaration Class & Object Constructor Constructor Example Overloading "this" Keyword (1) "this" Keyword (2) Instance & Local variable Hands-on Project: Constructor Hands-on Project: Contact Info. Summary Chapter 6 Inheritance "super" keyword Overriding Overloading & Overriding Static Variable Static Method Final Variable Final Method( ) Final class Polymorphism Package & Import Build a Package, Import a Class Hands-on Project: Inheritance Summary Chapter 7 Abstract Abstract Example Permission Public Member Protected Member Default Member Private Member Private Example Interface Interface Example Abstract & Interface User Input Additional Class Hands-on Project: Max & Min Hands-on Project: Max & Min Summary Chapter 8 Exception Catch Exception (1) Catch Exception (2) Catch Exception (3) Finally Command Throw Exception Throws Exception File Class FileOutputStream FileInputStream Create Thread Extends Thread Implements Runnable Multi-Thread Thread's Methods Thread Methods Example Hands-on Project: Out of Range Hands-on Project: Multi-Tasks Summary JAVA Questions & Answers Questions Answers Recommended Books Paperback Searching Keywords: Java by Ray Yao Java in 8 Hours ASIN ‏ : ‎ B0BMQX5CGR Publisher ‏ : ‎ Ray Yao's Books (16 November 2022) Language ‏ : ‎ English File size ‏ : ‎ 4125 KB Text-to-Speech ‏

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technicalgyanweb · 3 years ago

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Java Tokens In Hindi

What is Tokens Tokens :- program के छोटे से छोटे element जिसे compiler identify करता है उसी को हम टोकंस कहते है tokens program की choti से छोटी unit होती है जिसके बिना हम कोई भी program नहीं लिख सकते जैसे (words, syntax, special symbol, marks etc) Types of Tokens - Keywords - Identifiers - Operators - Separators - Literals 1. Keywords :- (Keywords are reserved words whose meaning is already defined in java compiler) keywords ऐसे words होते है जिसका meaning java compiler के अंदर पहले से ही defined कर दिया है। जिसका use हम personally नहीं कर सकते है। Examples boolean byte char double float short void int long while for do switch break continue case default if else try finally import new final volatile catch instance of public super protected class private static transient return abstract interface throws implements this extends native package synchronized throws 2. Identifiers :- Identifier हमारे program में variable का name , class का name, method का name, interface हो सकता है identifier का purpose सिर्फ identify करना है class A { int x = 12; } यहाँ पर class name A एक identifier है जो एक class को identify कर रहा है। variable name x भी एक identifier है जो variable को define कर रहा है। Rules of identifiers - identifier का name हम keyword name पर नहीं रख सकते है। - identifiers case sensitive होते है। - identifier का name हम digits से start नहीं कर सकते यह letters, underscore(-), dollar($) से start होता है। - identifier में हम whilespace का use नहीं कर सकते है और इसमें (@, #, etc) special symbol का use भी नहीं कर सकते है। 3. Operators :- Special symbol को ही हम operators कहते है। इसका use हम operation perform करने के लिए करते है operators दो operands (value) के बीच में लग कर उनकी value change करते है। (2+3 = 5) six types के operators होते है। 4. Separator :- Separator का use हम statement को saperate करने के लिए करते है। separators कई तरह के होते है जैसे (), {}, , ;, : etc parantheses () parantheses का use function को call करने के लिए करते है। braces {} curly braces का use code के block को indicate करता है। bracket bracket का use code में array के size को defined करता है। semi colon ; semi colon का use हम statement ending के बाद करते है। 5. Literals (Constant) :- constant भी variable की तरह होता है लेकिन constant की value को हम change नहीं कर सकते है। यह हमेशा constant रहती है। जबकि हम variable की value को change कर सकते है। Read the full article

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javagoalblog · 4 years ago

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#coding #code #programming #programmer #academia #geek #programmer humor #software #software engineering #teaching

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amansingh10 · 4 years ago

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Object-Oriented Programming languageoffers different features like encapsulation, inheritance, polymorphism, etc. As Java isan OOP, it supports the concept of inheritance. The two keywords extends and implements are used to achieve inheritance in the Java program. There are somedifferences between extends and implements.

Java extends keyword

In Java, inheritance allows a child class to use the methods and variables of already declared base class. It reduces the rewriting of code.

Inheritance is implemented using extends keyword.

The data members declared inside the super class are accessible to the child class depending on the access specifier used.

Any class in Java can only inherit one super class.

For example, class ArrayList extends AbstractList class. And AbstractList extends AbstractCollection class.

#java #extends #implements

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corejavatopics · 4 years ago

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Complete Core Java Topics List | From Basic to Advanced Level [2021]

Attention Dear Reader, In this article, I will provide you a Complete Core Java Topics List & All concepts of java with step by step. How to learn java, when you need to start, what is the requirement to learn java, from where to start learning java,and Tools to Understand Java code. every basic thing I will include in this List of java.

core java topics list Every beginner is a little bit confused, at the starting point before learning any programming language. But you no need to worry about it. Our aim to teach you to become a good programmer. In below you can start with lesson 1 or find out the topics manually. it’s your choice.

Complete Core Java Topics List.

Chapter. 1Full Basic Introduction of java.1.1What is java?1.2Features if java?1.3What is Software?1.4What are Programs?1.5Need to know about Platforms.1.6Object Orientation.1.7What are objects in java?1.8Class in java.1.9Keywords or Reserved words of java.1.10Identifiers in java.1.11Naming convention / coding Standard.1.12Association (Has-A Relationship).1.13Aggregation and Composition in java.1.14Java Compilation process.1.15WORA Architecture of java.1.16What is JVM, JRE and JDK in java?Chapter. 2Classes and Objects in Detail2.1How to create Class?2.2How to Create Objects?2.3Different ways to create objects in class.2.4object Reference / object Address.2.5Object States and Behavior.2.6Object Creation & Direct Initialization.2.7Object initialization using Reference.Chapter. 3Data Types in Java.3.1Java Primitive Data Types.3.2Java Non-Primitive Data Types.Chapter. 4Instance Method.4.1Types of methods in java.4.2Rules of Methods.4.3How to use methods in a class.Chapter. 5Class Loading in Java?5.1What is Class Loading.5.2Class Loading Steps.5.3Program Flow explanation.5.4"this" Keyword in java?Chapter. 6Variables in java.6.1Types of Variables.6.2Scope of variables.6.3Variable initialization.Chapter. 7Variable Shadowing in Java?Chapter. 8 Constructors in java.8.1Rules for creating java Constructors.8.2Types of Construstors.8.3Difference between Constructor and method in java.Chapter. 9Categories of methods in java.9.1Abstract Method in java.9.2Concrete Method in java.Chapter. 10Overloading in java.10.1Types if Overloading.10.2Advantages and Disadvantages of overloading.10.3Can we overload main( ) method in java?10.4Constructor Overloading in java.Chapter. 11Inheritance in java?11.1Types of Inheritance.11.2Terms used in inheritance.11.3The syntax of java inheritance.11.4How to use Inheritance in java/Chapter. 12Overriding in java.12.1Usage of java method Overriding.12.2Rules of method Overriding.12.3Importance of access modifiers in overriding.12.4Real example of method Overriding.12.5Difference between method overriding and overloading java.12.6"Super" keyword in java.Chapter. 13Constructor chaining in java.13.1Generalization in java with Example.Chapter. 14Type-Casting in java.14.1Primitive and Non-Primitive Casting in java.14.2Data Widening and Data Narrowing in java.14.3Up-Casting in java.14.4Down-Casting in java.14.5Characteristics of Up-Casting.Chapter. 15Garbage Collection.15.1Advantages of Garbage Collection.15.2How can an object be unreferanced in java?15.3Some examples of Garbage Collection in java.Chapter. 16Wrapper Class in java.16.1Uses of wrapper class in java.16.2How to Convert Primitive form to object form.16.3How to Convert String form to Primitive form.16.4Learn public static xxx parsexxx(Strings srop).16.5Autoboxing in java.16.6Unboxing in java.Chapter. 17Polymorphism in java?17.1Compile time polymorphism.17.2Runtime Polymorphism.Chapter. 18Packages in java?18.1Advantages of Packages in java.18.2Standard Package structure if java Program.18.3How to access package from another package?18.4Inbuilt package in java?18.5What are Access Modifiers In java.18.6Types of Access Modifires.Chapter. 19Encapsulation in java.19.1Advantages of Encapsulation in java?19.2Java Bean Specification or Guidelines.Chapter. 20Abstraction in java.20.1What are abstract methods in java?20.2Abstract Class in java?20.3Difference between Abstract class and Concrete class.20.4Similarities between Abstract and Concrete class?20.5Interface in java?20.6Why use java interface?20.7How to declare an interface in java?20.8Types of Interface in java?20.9What are the uses of Abstraction?20.10Purpose or Advantages of Abstraction.Chapter. 21Collection Framework in java?21.1What is collection in java?21.2What is framework in java?21.3Advantages of collection over an array in java.21.4Collection Framework Hierarchy in java.21.5Generics in java?21.6List Interface in java.21.7Methods of List Interfae in java.21.8ArrayList in java?21.9Vector in java.21.10Difference between ArrayList and Vector.21.11LinkedList in Java.21.12Difference between ArrayList and LinkedList.21.13Iterating Data from List.21.14foreach Loop in java.21.15Difference between for loop and foreach loop.21.16Set Interface in java.21.17Has-based Collection in java.21.18What are HashSet in java?21.19What are LinkedHashSet in java?21.20What are TreeSet in Java?21.21Iterator interface in java.21.22Iterator Methods in java.21.23ListIterator interface in java.Chapter. 22What are Map in java?22.1Map interface method in java.22.2What are HashMap in java?22.3What are LinkedHashMap in java?22.4What are TreeMap in java?22.5HashTable in java?22.6ShortedMap in java?22.7Difference between HashMap and Hashtable in java?22.8Comparable and Comparator in java?22.9Where Comparable and Comparator is used in java?22.10What is Comparable and Comparator interface in java?Chapter. 23Exception Handling in Java.23.1Exception Hierarchy in java.23.2Checked and Unchecked Exception in java?23.3Java Try Block?23.4java catch Block?23.5Multi-catch block in java?23.6Sequence of catch Block in java?23.7Finally Block in java?23.8"throws" keyword in java?23.9"throw" keyword in java?23.10Difference between throw and throws in java.23.11Custom and user defined exception in java?23.12Difference between final, finally and finalize in java?Chapter. 24Other Advanced Topics24.1Advanced Programming Java Concepts"👆This is the Complete Core Java Topics List"

How to Learn Java Step by Step?

We know that java is the most popular programming language on the internet. and also know this is the most important language for Android Development. with the help of java, we can develop an Android application. All over the topics will helps you to understated the basic concepts to learn java step by step. which helps you to understand the structure of any application backend code for app development. we recommended you to do more practice of all concepts and topics list. which is given over to becoming a good java developer. Must Read: What is Java, Full Introduction of Java for Beginners with Examples?

What is a Programming Language?

In short, Any software language. which is used in order to build a program is called a programming language. Java is also an object-oriented programming language. using that we can develop any type of software or web application. Is it easy to learn Java?

Is it easy to learn Java? My answer is "yes". Java is a beginner-friendly programming language. Because Every beginner easily learns java programming language. that means you don't need to give much effort to learn. you can start from a lower level to a higher level. Also, it provides you a user-friendly environment to develop software for clients. it has a garbage collector, which helps a lot to manage the memory space of your system for better performance. Tools to Understand Java Code. The market has lots of tools for programming. as a beginner, I will be recommending some Cool tools for Java Programming, which helps you to write and execute codes easily. 1. Eclipse: This is one of my favorite tools for practicing java codes. it will provide an integrated development environment for Java. Eclipse proved us so many interesting & modern features, modeling tools, testing tools. and frameworks development environment.

this Tools helps you to Understand Java Code. Here is Some Features of Eclipse: - User-Friendly Interface. - Provides a Model-Driven Development environment. - Easy integration with JUnit. - you can code faster with the Short-cuts. - Provide Complete reports in detail. - easy customization. with the Ctrlflow Automated Error Reporting Server. - Eclipse Provides the best tooling system for J2EE projects. - You can Download free. 2. JUnit: it is an open source unit for testing tool for Java programs. It is test-driven development and software deployment.

this Tools helps you to Understand Java Code. Here is Some Features of JUnit: - Prepare for input data and setup. - Some creation of fake objects. - Automatic Loading databases with a specific set of data - offers annotations, that test classes fixture, that's run before or after every test - support for write and execute tests on the platform. - Have some annotations to identify test methods - we can write codes faster, which increases the quality of codes and practices. - You can Download free Also Read: How to Download and Install Java JDK 15 in Windows 10 ? How longs to learn java? Every beginner student had pinged this question. How longs to learn java? now I will tell you according to the research. the speed of learning technologies and related subjects depends on the regularity of studies and the initial capacity of every student. I know you can do anything with your initial capacity level. but the regular study is a big responsibility of every student. I will recommend practicing daily to improve your programming skills and java concepts knowledge. and get stay motivated with your goals. definitely it will help you to get your first job. Note:- if any person has a little bit of programming knowledge, honestly it would take around 1 month to learn the basic concepts of java. if you are from a non-programming background but have a good knowledge of basic mathematics. definitely, you can also learn and understand fast all the concepts of java. it will all depend on your problem-solving skills and understanding concepts. Conclusions: At the starting of the article, I will provide you a complete core java topics list. it will help you to understand, where you need start, this is the basic step for a beginner. and also provides some tools for your practicing. I hope now you can start lean java with you motivation. Admin Word:- In this article, I provided A Complete Core Java Topics List. and also give your all pinged questions answers such as How to Learn Java Step by Step?, What is a Programming Language, Is it easy to learn Java, How longs to learn java. Also provides some free Tools to Understand Java Code which helps to Learn Java Step by Step. if you have any questions regarding this article please feel free to ask in the comment below of this article. Read the full article

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himanshuprigavit1295 · 4 years ago

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How to implement OOPS concepts in Java?

This blog is dedicated to give a brief and concise details of the implementation of the OOPS concept in Java. However, before going into details, we need to understand the concept of object-oriented programming itself. In this blog, we are going to follow a hybrid approach where we understand the concept of an OOPS principle and then proceed to their implementation in Java. Let’s get started!

Object-Oriented Programming or OOPs refers to a programming style or paradigms that uses objects and aims to implement real-world entities like inheritance, abstraction, polymorphism among others. OOPs is a widely regarded and popular concept because it binds together the data and their functions so that no other part of the code can access that particular data. The main concept of OOPS are Polymorphism, Inheritance, Encapsulation, Abstraction. In today’s blog, we are going to learn in detail about the different characteristics of an Object-Oriented Programming language along with their implementation in Java. Let’s begun our journey by understanding Polymorphism.

Polymorphism

Polymorphism is the ability of OOPS to efficiently differentiate between entities with the same name. The implementation of Java in polymorphism is done by the signature and declaration of these entities. Let us take an example of implementation of polymorphism in Java.

public class Sample {

// This is our first function where we take two integer parameters

public int add (int i, int j)

{ return (i + j); }

public int add (int i, int j, int k)

// This is our second function sum () where we take three int parameters

{

return (i + j + k);

}

public double add (double i, double j)

// This is our second function sum () where we take two double parameters

{

return (i + j);

} }

The above was the main Java program that describes Polymorphism. There is a class by the name of Sample which contains three methods with the same name. We will see in the driver code that the program still compiles and runs successfully. Let’s write our main code also.

public static void main (String args[])

{

Sample s = new sample ();

System.out.println(s.add(100, 200));

System.out.println(s.add(100, 200, 300));

System.out.println(s.add(100.5, 200.5));

}

The output of the program above will be -

300

600

301.0

In Java, polymorphism is implemented in 2 ways. The first type is overloading and second is overriding in Java. It is time we move on to our next OOPS principle.

Inheritance

Inheritance is another aspect of object-oriented Programming by which one class is allowed to inherit the features of another class. There are some significant terminologies associated with inheritance, let’s understand some of them.

Super Class is the class whose features are inherited. It is also known as the base or the parent class. Another feature is the sub class, it is the class that inherits features from a particular class, it is known as derived, extended class or child class. This subclass can also add its own fields and methods in addition to the inherited or derived ones.

One important concept supported by inheritance is reusability. It simply means that when a new class has to be created, it can be derived from an existing class and reuse some of the code or particular fields and methods of the existing class. In Java, the keyword used for inheritance is ‘extends’. Let’s look at a simple syntax to create a class.

class child-class extends parent-class

{

//methods and fields

}

Encapsulation

Encapsulation is the mechanism of OOPS that binds together code and the data it manipulates. Encapsulation is like a protective shield that prevents the data from being accessed by the code outside this shield. In other words, data of one class is hidden from any other class. It can only be accessed through any member function of the class in which they are originally declared. Encapsulation is also known as data hiding as the data in one particular class is hidden from other classes. Talking about its implementation, encapsulation is achieved by setting all the variables in the class as private and writing public methods in the class to set and get the values of variables.

Abstraction

After encapsulation, we must progress to data abstraction in OOPS. With the help of abstraction, only the essential details are displayed to the user and the rest is not. For example, a car is not viewed as its individual components. It is basically the process of identifying only the required characteristics of an object and ignoring the irrelevant details.

We can understand abstraction with the help of an example of a driving car. The person driving a car only knows that accelerators are used to increase the speed of car and brakes are used to stop the car. However, the user does not know that the inner mechanism by which the accelerator speeds up a car or a break stops a car. This is the exact concept of abstraction. Implementation of abstraction in Java is done by interfaces as well as abstract classes.

With this we have discussed the basic concept and implementation of the major pillar of Object-oriented programming in Java, that is, encapsulation, inheritance, abstraction and polymorphism. It is now time; we discuss some crucial and widely used terms in object OOPS.

Terms to Know

One of the most important terms in OOPS is Class. It is widely known as a user defined blueprint or a prototype from which objects are created. A class represents a set of properties as well as methods and these are common to all objects of the class. When declaring a class, there are a lot of components that come in use. Let’s understand each of them.

The first one is modifier which sets class to have either public or default access. The second is the class name which should always begin with a letter. Next thing is the name of superclass or the parent class if there is any. It is preceded by the keyword ‘extends’. Another is a comma-separated list of interfaces, if there is any. It is preceded by the keyword ‘implements.’ After these keywords and components comes the body of the class surrounded by curly braces.

After the class is defined, the object of a class comes into picture. Objects are widely known as the basic unit of Object Oriented Programming. It basically represents real life entities.

Many objects are created in a general Java program which interact by invoking methods. An object has a state, behaviour and identity. The state of an object is represented by attributes of an object and reflects the properties of an object. An object also has a behaviour that defines the response of an object. It is represented by methods of a class. The identity of the object is the unique name of the object.

A method performs a specific task and might return the result to the caller. They are used to reuse the code and eliminates the need to retype the same code again. In the implementation of classes in Java, one important thing to note is that every method must be part of some class. The concept of method saves time as we are able to reuse the code without retyping.

When we discuss methods, method declaration also comes into picture. Method declarations has an access modifier, name of the method, exception list, parameter list and the body of the method. W have enlisted the basic definition of each of these components in brief.

An access Modifier is used to specify that from where the method can be accessed in the application. There 4 type of the access specifiers in Java, that is, public, protected, private and default. If a method is public, it means that it can be accessible in all classes of the application. Protected means that it can be accessed only in its subclasses or within the package in which it is defined. Private means that the method can be accessed only in the class in which it is defined. Also, if the method is declared or defined without using any modifier, it means that it can be accessed within same class and package in which it is defined.

The return type of the method is the data type of the value returned by the method and it is void if the method does not return any value. Also, the name of the method should follow all the rules and conventions of the language it is defined in.

In the components of a class, we talked about parameter and exception list of a method. The parameter list is a comma separated list of the input parameters which is preceded with their data type, within the enclosed parenthesis and there is a set of empty parentheses if there are no parameters. Similarly, the exception list contains some general or obvious exceptions that a method can throw. Lastly, the body of the method is enclosed between braces and contains the code that needs to be executed.

The blog above was a compilation of all the basic principles of OOPS and their implementation in Java along with general terms used in this programming paradigm. We hope you found it useful, if you did, we expect you to check out our other blogs and augment your technical knowledge. Keep learning, keep growing!

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#java #webdevelopmentcourse

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pradtutorials · 4 years ago

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Super Keyword in Java with Examples

#superkeywordinjava javasuper useofsuperkeywordinjava differencebetweenthisandsuperkeywordinjava

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khurshidmdanwar · 5 years ago

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Java super keyword with example

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technicalgyanweb · 3 years ago

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Java Tokens In Hindi

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siva3155 · 5 years ago

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300+ TOP OOPS Interview Questions and Answers

OOPS Interview Questions for freshers experienced :-

1. What is OOPS? OOPS is abbreviated as Object Oriented Programming system in which programs are considered as a collection of objects. Each object is nothing but an instance of a class. 2. Write basic concepts of OOPS? Following are the concepts of OOPS and are as follows: Abstraction. Encapsulation. Inheritance. Polymorphism. 3. What is a class? A class is simply a representation of a type of object. It is the blueprint/ plan/ template that describes the details of an object. 4. What is an object? An object is an instance of a class. It has its own state, behavior, and identity. 5. What is Encapsulation? Encapsulation is an attribute of an object, and it contains all data which is hidden. That hidden data can be restricted to the members of that class. Levels are Public, Protected, Private, Internal and Protected Internal. 6. What is Polymorphism? Polymorphism is nothing but assigning behavior or value in a subclass to something that was already declared in the main class. Simply, polymorphism takes more than one form. 7. What is Inheritance? Inheritance is a concept where one class shares the structure and behavior defined in another class. If inheritance applied on one class is called Single Inheritance, and if it depends on multiple classes, then it is called multiple Inheritance. 8. What are manipulators? Manipulators are the functions which can be used in conjunction with the insertion () operators on an object. Examples are endl and setw. 9. Define a constructor? A constructor is a method used to initialize the state of an object, and it gets invoked at the time of object creation. Rules forconstructor are: Constructor Name should be same as class name. A constructor must have no return type. 10. Define Destructor? A destructor is a method which is automatically called when the object is made of scope or destroyed. Destructor name is also same as class name but with the tilde symbol before the name.

OOPS Interview Questions 11. What is an Inline function? An inline function is a technique used by the compilers and instructs to insert complete body of the function wherever that function is used in the program source code. 12. What is a virtual function? A virtual function is a member function of a class, and its functionality can be overridden in its derived class. This function can be implemented by using a keyword called virtual, and it can be given during function declaration. A virtual function can A token in C++, and it can be achieved in C Language by using function pointers or pointers to function. 13. What is a friend function? A friend function is a friend of a class that is allowed to access to Public, private or protected data in that same class. If the function is defined outside the class cannot access such information. Friend can be declared anywhere in the class declaration, and it cannot be affected by access control keywords like private, public or protected. 14. What is function overloading? Function overloading an as a normal function, but it can perform different tasks. It allows the creation of several methods with the same name which differ from each other by the type of input and output of the function. Example void add(int& a, int& b); void add(double& a, double& b); void add(struct bob& a, struct bob& b); 15. What is operator overloading? Operator overloading is a function where different operators are applied and depends on the arguments. Operator,-,* can be used to pass through the function, and it has their own precedence to execute 16. What is an abstract class? An abstract class is a class which cannot be instantiated. Creation of an object is not possible with an abstract class, but it can be inherited. An abstract class can contain only Abstract method. Java allows only abstract method in abstract class while for other languages allow non-abstract method as well. 17. What is a ternary operator? The ternary operator is said to be an operator which takes three arguments. Arguments and results are of different data types, and it depends on the function. The ternary operator is also called a conditional operator. 18. What is the use of finalize method? Finalize method helps to perform cleanup operations on the resources which are not currently used. Finalize method is protected, and it is accessible only through this class or by a derived class. 19. What are different types of arguments? A parameter is a variable used during the declaration of the function or subroutine and arguments are passed to the an, and it should match with the parameter defined. There are two types of Arguments. Call by Value – Value passed will get modified only inside the function, and it returns the same value whatever it is passed it into the function. Call by Reference – Value passed will get modified in both inside and outside the functions and it returns the same or different value. 20. What is the super keyword? Super keyword is used to invoke the overridden method which overrides one of its superclass methods. This keyword allows to access overridden methods and also to access hidden members of the superclass. It also forwards a call from a constructor to a constructor in the superclass. 21. What is method overriding? Method overriding is a feature that allows a subclass to provide the implementation of a method that overrides in the main class. This will overrides the implementation in the superclass by providing the same method name, same parameter and same return type. 22. What is an interface? An interface is a collection of an abstract method. If the class implements an inheritance, and then thereby inherits all the abstract methods of an interface. 23. What is exception handling? An exception is an event that occurs during the execution of a program. Exceptions can be of any type – Runtime exception, Error exceptions. Those exceptions are adequately handled through exception handling mechanism like try, catch and throw keywords. 24. What are tokens? The token is recognized by a compiler, and it cannot be broken down into component elements. Keywords, identifiers, constants, string literals and operators are examples of tokens. Even punctuation characters are also considered as tokens – Brackets, Commas, Braces and Parentheses. 25. Difference between overloading and overriding? Overloading is static binding whereas Overriding is dynamic binding. Overloading is nothing but the same method with different arguments, and it may or may not return the same value in the same class itself. Overriding is the same method names with same arguments and return types associated with the class and its child class. 26. Difference between class and an object? An object is an instance of a class. Objects hold any information , but classes don’t have any information. Definition of properties and functions can be done at class and can be used by the object. Class can have sub-classes, and an object doesn’t have sub-objects. 27. What is an abstraction? Abstraction is a good feature of OOPS , and it shows only the necessary details to the client of an object. Means, it shows only necessary details for an object, not the inner details of an object. Example – When you want to switch On television, it not necessary to show all the functions of TV. Whatever is required to switch on TV will be showed by using abstract class. 28. What are access modifiers? Access modifiers determine the scope of the method or variables that can be accessed from other various objects or classes. There are 5 types of access modifiers , and they are as follows:. Private. Protected. Public. Friend. Protected Friend. 29. What is sealed modifiers? Sealed modifiers are the access modifiers where it cannot be inherited by the methods. Sealed modifiers can also be applied to properties, events and methods. This modifier cannot be applied to static members. 30. How can we call the base method without creating an instance? Yes, it is possible to call the base method without creating an instance. And that method should be,. Static method. Doing inheritance from that class.-Use Base Keyword from derived class. 31. What is the difference between new and override? The new modifier instructs the compiler to use the new implementation instead of the base class function. Whereas, Override modifier helps to override the base class function. 32. What are the various types of constructors? There are three various types of constructors , and they are as follows:. Default Constructor – With no parameters. Parametric Constructor – With Parameters. Create a new instance of a class and also passing arguments simultaneously. Copy Constructor – Which creates a new object as a copy of an existing object. 33. What is early and late binding? Early binding refers to assignment of values to variables during design time whereas late binding refers to assignment of values to variables during run time. 34. What is ‘this’ pointer? THIS pointer refers to the current object of a class. THIS keyword is used as a pointer which differentiates between the current object with the global object. Basically, it refers to the current object. 35. What is the difference betweenstructure and a class? Structure default access type is public , but class access type is private. A structure is used for grouping data whereas class can be used for grouping data and methods. Structures are exclusively used for dataand it doesn’t require strict validation , but classes are used to encapsulates and inherit data which requires strict validation. 36. What is the default access modifier in a class? The default access modifier of a class is Private by default. 37. What is pure virtual function? A pure virtual function is a function which can be overridden in the derived classbut cannot be defined. A virtual function can be declared as Pure by using the operator =0. Example -. Virtual void function1() // Virtual, Not pure Virtual void function2() = 0 //Pure virtual 38. What are all the operators that cannot be overloaded? Following are the operators that cannot be overloaded -. Scope Resolution (:: ) Member Selection (.) Member selection through a pointer to function (.*) 39. What is dynamic or run time polymorphism? Dynamic or Run time polymorphism is also known as method overriding in which call to an overridden function is resolved during run time, not at the compile time. It means having two or more methods with the same name,same signature but with different implementation. 40. Do we require parameter for constructors? No, we do not require parameter for constructors. 41. What is a copy constructor? This is a special constructor for creating a new object as a copy of an existing object. There will be always only on copy constructor that can be either defined by the user or the system. 42. What does the keyword virtual represented in the method definition? It means, we can override the method. 43. Whether static method can use non static members? False. 44. What are base class, sub class and super class? Base class is the most generalized class , and it is said to be a root class. Sub class is a class that inherits from one or more base classes. Super class is the parent class from which another class inherits. 45. What is static and dynamic binding? Binding is nothing but the association of a name with the class. Static binding is a binding in which name can be associated with the class during compilation time , and it is also called as early Binding. Dynamic binding is a binding in which name can be associated with the class during execution time , and it is also called as Late Binding. 46. How many instances can be created for an abstract class? Zero instances will be created for an abstract class. 47. Which keyword can be used for overloading? Operator keyword is used for overloading. 48. What is the default access specifier in a class definition? Private access specifier is used in a class definition. 49. Which OOPS concept is used as reuse mechanism? Inheritance is the OOPS concept that can be used as reuse mechanism. 50. Which OOPS concept exposes only necessary information to the calling functions? Data Hiding / Abstraction 51. What is Inline function? In the C and C++ programming languages, an inline function is one qualified with the keyword inline; this serves two purposes. Firstly, it serves as a compiler directive, which suggests (but does not require) that the compiler substitute the body of the function inline by performing inline expansion, The second purpose of inline is to change linkage behavior; the details of this are complicated. 52. What is operator overloading? In programming, operator overloading—less commonly known as operator ad hoc polymorphism—is a specific case of polymorphism, where different operators have different implementations depending on their arguments. Operator overloading is generally defined by the language, the programmer, or both. 53. Different between method overriding and method overloading? In Overriding methods it will create two or more methods with same name and same parameter in different classes. while Overloading it will create more then one method with same name but different parameter in same class. 54. What is this keywords? Every instance method in every object in Java receives a reference named this when the method is invoked. The reference named this is a reference to the object on which the method was invoked. It can be used for any purpose for which such a reference is needed. 55. What is super keyword? The super keyword is a reference variable that is used to refer immediate parent class object. Whenever you create the instance of subclass, an instance of parent class is created implicitly i.e. referred by super reference variable. 56. What is an abstract class? An abstract class is a class that is declared abstract—it may or may not include abstract methods. Abstract classes cannot be instantiated, but they can be subclassed. 57. What is final keywords? The final keyword in java is used to restrict the user. The java final keyword can be used in many context. Final can be: variable, method, class. The final keyword can be applied with the variables, a final variable that have no value it is called blank final variable or uninitialized final variable. It can be initialized in the constructor only. The blank final variable can be static also which will be initialized in the static block only. 58. Types of Constructors Basically constructors are 5 types those are Default Constructor Parameterized Constructor Copy Constructor Static Constructor Private Constructor 59. When do you really need to create an abstract class? We define abstract classes when we define a template that needs to be followed by all the derived classes. 60. What are the different ways a method can be overloaded? The different ways to overload a method are given as follows: By changing the number of parameters used By changing the order of parameters By using different data types for the parameters OOPS Questions and Answers Pdf Download Read the full article

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t-baba · 5 years ago

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JavaScript’s New Private Class Fields, and How to Use Them

ES6 introduced classes to JavaScript, but they can be too simplistic for complex applications. Class fields (also referred to as class properties) aim to deliver simpler constructors with private and static members. The proposal is currently a TC39 stage 3: candidate and is likely to be added to ES2019 (ES10). Private fields are currently supported in Node.js 12, Chrome 74, and Babel.

A quick recap of ES6 classes is useful before we look at how class fields are implemented.

ES6 Class Basics

JavaScript's object-oriented inheritance model can confuse developers coming from languages such as C++, C#, Java, and PHP. For this reason, ES6 introduced classes. They are primarily syntactical sugar but offer more familiar object-oriented programming concepts.

A class is an object template which defines how objects of that type behave. The following Animal class defines generic animals (classes are normally denoted with an initial capital to distinguish them from objects and other types):

Class declarations always execute in strict mode. There's no need to add 'use strict'.

The constructor method is run when an object of the Animal type is created. It typically sets initial properties and handles other initializations. speak() and walk() are instance methods which add further functionality.

An object can now be created from this class with the new keyword:

let rex = new Animal('Rex', 4, 'woof'); rex.speak(); // Rex says "woof" rex.noise = 'growl'; rex.speak(); // Rex says "growl"

Getters and Setters

Setters are special methods used to define values only. Similarly, Getters are special methods used to return a value only. For example:

class Animal { constructor(name = 'anonymous', legs = 4, noise = 'nothing') { this.type = 'animal'; this.name = name; this.legs = legs; this.noise = noise; } speak() { console.log(`${this.name} says "${this.noise}"`); } walk() { console.log(`${this.name} walks on ${this.legs} legs`); } // setter set eats(food) { this.food = food; } // getter get dinner() { return `${this.name} eats ${this.food || 'nothing'} for dinner.`; } } let rex = new Animal('Rex', 4, 'woof'); rex.eats = 'anything'; console.log( rex.dinner ); // Rex eats anything for dinner.

Child or Sub-classes

It's often practical to use one class as the base for another. A Human class could inherit all the properties and methods from the Animal class using the extends keyword. Properties and methods can be added, removed, or changed as necessary so human object creation becomes easier and more readable:

class Human extends Animal { constructor(name) { // call the Animal constructor super(name, 2, 'nothing of interest'); this.type = 'human'; } // override Animal.speak speak(to) { super.speak(); if (to) console.log(`to ${to}`); } }

super refers to the parent class, so it’s usually the first call made in the constructor. In this example, the Human speak() method overrides that defined in Animal.

Object instances of Human can now be created:

let don = new Human('Don'); don.speak('anyone'); // Don says "nothing of interest" to anyone don.eats = 'burgers'; console.log( don.dinner ); // Don eats burgers for dinner.

The post JavaScript’s New Private Class Fields, and How to Use Them appeared first on SitePoint.

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bytegenius-blog · 6 years ago

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Constructors in Java with Example

In this chapter, we are going to learn about Constructors in Java. Before starting, I recommend reading Class and Package and Super, This, and Final keyword in Java.

What is Constructor in Java?

Constructors are a piece of code or usually a special method whose name is the same as the class name. Constructors are used for initializing objects and they are called just after the object creation.

Al…

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suzanneshannon · 6 years ago

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What is super() in JavaScript?

What's happening when you see some JavaScript that calls super()?.In a child class, you use super() to call its parent’s constructor and super.<methodName> to access its parent’s methods. This article will assume at least a little familiarity with the concepts of constructors and child and parent classes. If that's totally new, you may want to start with Mozilla's article on Object-oriented JavaScript for beginners.

Super isn't unique to Javascript — many programming languages, including Java and Python, have a super() keyword that provides a reference to a parent class. JavaScript, unlike Java and Python, is not built around a class inheritance model. Instead, it extends JavaScript’s prototypal inheritance model to provide behavior that’s consistent with class inheritance.

Let’s learn a bit more about it and look at some code samples.

First off, here’s a quote from Mozilla’s web docs for classes:

JavaScript classes, introduced in ECMAScript 2015, are primarily syntactical sugar over JavaScript's existing prototype-based inheritance. The class syntax does not introduce a new object-oriented inheritance model to JavaScript.

An example of a simple child and parent class will help illustrate what this quote really means:

See the Pen ZEzggLK by Bailey Jones (@bailey_jones) on CodePen.

My example has two classes: fish and trout. All fish have information for habitat and length, so those properties belong to the fish class. Trout also has a property for variety, so it extends fish to build on top of the other two properties. Here are the constructors for fish and trout:

class fish { constructor(habitat, length) { this.habitat = habitat this.length = length } } class trout extends fish { constructor(habitat, length, variety) { super(habitat, length) this.variety = variety } }

The fish class’s constructor defines habitat and length, and the trout’s constructor defines variety. I have to call super() in trout’s constructor, or I’ll get a reference error when I try to set this.variety. That's because on line one of the trout class, I told JavaScript that trout is a child of fish using the extends keyword. That means trout’s this context includes the properties and methods defined in the fish class, plus whatever properties and methods trout defines for itself. Calling super() essentially lets JavaScript know what a fish is so that it can create a this context for trout that includes everything from fish, plus everything we’re about to define for trout. The fish class doesn’t need super() because its “parent” is just the JavaScript Object. Fish is already at the top of the prototypal inheritance chain, so calling super() is not necessary — fish’s this context only needs to include Object, which JavaScript already knows about.

The prototypal inheritance model for fish and trout and the properties available on the this context for each of them. Starting from the top, the prototypal inheritance chain here goes Object → fish → trout.

I called super(habitat, length) in trout’s constructor (referencing the fish class), making all three properties immediately available on the this context for trout. There’s actually another way to get the same behavior out of trout’s constructor. I must call super() to avoid a reference error, but I don’t have to call it “correctly” with parameters that fish's constructor expects. That's because I don't have to use super() to assign values to the fields that fish creates — I just have to make sure that those fields exist on trout's this context. This is an important difference between JavaScript and a true class inheritance model, like Java, where the following code could be illegal depending on how I implemented the fish class:

class trout extends fish { constructor(habitat, length, variety) { super() this.habitat = habitat this.length = length this.variety = variety } }

This alternate trout constructor makes it harder to tell which properties belong to fish and which belong to trout, but it gets the same result as the previous example. The only difference is that here, calling super() with no parameters creates the properties habitat and length on the current this context without assigning anything to them. If I called console.log(this) after line three, it would print {habitat: undefined, length: undefined}. Lines four and five assign values.

I can also use super() outside of trout’s constructor in order to reference methods on the parent class. Here I’ve defined a renderProperties method that will display all the class’s properties into the HTML element I pass to it. super() is useful here because I want my trout class to implement a similar method that does the same thing plus a little more — it assigns a class name to the element before updating its HTML. I can reuse the logic from the fish class by calling super.renderProperties() inside the relevant class function.

class fish { renderProperties(element) { element.innerHTML = JSON.stringify(this) } } class trout extends fish { renderPropertiesWithSuper(element) { element.className="green" super.renderProperties(element); }

The name you choose is important. I’ve called my method in the trout class renderPropertiesWithSuper() because I still want to have the option of calling trout.renderProperties() as it’s defined on the fish class. If I’d just named the function in the trout class renderProperties, that would be perfectly valid; however, I’d no longer be able to access both functions directly from an instance of trout - calling trout.renderProperties would call the function defined on trout. This isn't necessarily a useful implementation - it's an arguably better pattern for a function that calls super like this to overwrite its parent function's name - but it does illustrate how flexible JavaScript allows your classes to be.

It is completely possible to implement this example without the use of the super() or extends keywords that were so helpful in the previous code sample, it's just much less convenient. That's what Mozilla meant by "syntactical sugar." In fact, if I plugged my previous code into a transpiler like Babel to make sure my classes worked with older versions of JavaScript, it would generate something closer to the following code. The code here is mostly the same, but you'll notice that without extends and super(), I have to define fish and trout as functions and access their prototypes directly. I also have to do some extra wiring on lines 15, 16, and 17 to establish trout as a child of fish and to make sure trout can be passed the correct this context in its constructor. If you're interested in a deep dive into what's going on here, Eric Green has an excellent post with lots of code samples on how to build classes with and without ES2015.

See the Pen wvvdxdd by Bailey Jones (@bailey_jones) on CodePen.

Classes in JavaScript are a powerful way to share functionality. Class components in React, for example, rely on them. However, if you're used to Object Oriented programming in another language that uses a class inheritance model, JavaScript's behavior can occasionally be surprising. Learning the basics of prototypal inheritance can help clarify how to work with classes in JavaScript.

The post What is super() in JavaScript? appeared first on CSS-Tricks.

What is super() in JavaScript? published first on https://deskbysnafu.tumblr.com/

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waqasblog2 · 6 years ago

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13 of the Best SEO Tools for Auditing and Monitoring Website Performance

There's nothing quite like a sudden Google algorithm update to leave marketers feeling equal parts confused and concerned. It seems like they wait for you to get all of your ducks in a row and then unleash an update that makes your efforts instantly obsolete.

Sure, they're pretty open about that fact that they're doing this for everyone's own good -- each algorithm tweak brings us one step closer to more relevant search results, after all. However, there is still some secrecy behind exactly how Google evaluates a website and ultimately determines which sites to show for which search queries.

That said, there are a number of tools out there -- some free, some paid -- that help you to look at your own site the way that Google sees it.

hbspt.cta._relativeUrls=true;hbspt.cta.load(53, '1d7211ac-7b1b-4405-b940-54b8acedb26e', {});

These tools are critical to your organic search strategy because they allow you to focus on the elements of your site that Google deems important. In this post, we'll walk through 13 such tools that all help you run a site analysis like a marketer ... and a Google bot.

SEO Tools

1. Google's Webmaster Tools

Perhaps the best way to understand the way Google sees your site is to ask Google. Google's Webmaster Tools are novice-friendly resources that explain the fundamentals of Google search.

For example, Google's Fetch as Google tool allows you to see a particular URL as Google sees it, which is critical when troubleshooting for poor SEO performance. The information returned can help you modify the page in question for better results, and can even help you isolate problematic code when you believe your site's been hacked.

Another great feature of Google Webmaster Tools is PageSpeed Insights. This SEO tool measures the performance of both your desktop and mobile site in terms of speed. With mobile search queries surpassing desktop searches, page speed is becoming increasingly important to businesses that want to hold on to their visitors.

"PageSpeed Insights evaluates how well a page follows common performance best practices and computes a score from 1-100 that estimates its performance headroom," according to Google Developers. That score can be Good, as in 80 or above; Medium, as in 60 to 79; or Low, as in 0 to 59.

2. Ahrefs

Cost: $99/mo for Lite Plan

Purpose: Keyword Research

Ahrefs is an advanced SEO resource that examines your website property and produces keyword, link, and ranking profiles to help you make better decisions on your content. Three of its main tools are:

When using the Keyword Explorer, Ahrefs will also produce the "parent topic" of the keyword you looked up, as you can see in the screenshot above, underneath the Keyword Difficulty meter. A keyword's parent topic is a broader keyword with higher search volume than your intended keyword, but likely has the same audience and ranking potential -- giving you more a valuable SEO opportunity when optimizing a particular blog post or webpage.

3. HubSpot's Website Grader

Back in 2007, HubSpot released a tool called Website Grader that helped businesses uncover search engine optimization opportunities. Because a lot has changed since then, the company has released a new and improved version of the tool.

Website Grader is an online tool that generates personalized reports based on the following key metrics:

All you need is your website URL and an email address to get started. Simply plug in your information and you can expect a score (1-100) as well as a detailed report in a matter of seconds.

Aside from Website Grader, HubSpot also has a handful of paid SEO tools to help you better direct your efforts.

For example, within the HubSpot Blogging App, users will find as-you-type SEO suggestions. This helpful inclusion serves as a checklist for content creators of all skill levels. HubSpot customers also have access to the Page Performance App, Sources Report, and the Keyword App. The HubSpot Marketing Platform will provide you with the tools you need to research keywords, monitor their performance, track organic search growth, and diagnose pages that may not be fully optimized.

4. Check My Links

To ensure that your links on a webpage -- whether external or internal -- actually work, consider Check My Links.

This broken-link checker makes it easy for a publisher or editor to make corrections before a page is live. Think about a site like Wikipedia, for example. The Wikipedia page for the term "marketing" contains a whopping 711 links. Not only was Check My Links able to detect this number in a matter of seconds, but it also found (and highlighted) seven broken links.

The tool highlights all the good links in green, and those that are broken in red, making it easy to spot the ones that don't work or are no longer active.

5. BuzzStream

Cost: Free 14-day trial, then paid plans from $24/mo

Purpose: Link Building

BuzzStream might be the most inexpensive way to manage your outreach to the people who can provide inbound links to your website.

Although backlinks to your website are critical to ranking well on Google, the outreach you do while link building can feel a lot like cold calling. BuzzStream makes it easy to research the appropriate people, come up with effective email messages, and track who's accepted each link request. Your link building queue looks like this:

Image via BuzzStream

BuzzStream helps you identify candidates for outreach based on their industry and how engaged they are across various social networks -- so you know who will be most receptive to your backlink request and boost your ranking on Google.

6. Moz's Pro Tools

Cost: Free 30-day trial, then paid plans from $99/mo

Purpose: Website Analysis

The Moz Pro subscription serves as an all-in-one tool for increasing your business' search ranking. Moz's collection of research tools provides subscribers with the resources they need to identify SEO opportunities, track growth, build reports, and optimize their overall efforts.

For example, the Crawl Test tool employs Moz's own web crawler, RogerBot, to analyze up to 3,000 links on a given URL. Once completed, users then receive an email report that details the data for each page the site links to.

Image via Moz

This is super helpful if you're looking to identify "crawlability" factors, such as duplicate content and redirects that could be influencing your SEO performance.

7. UpCity's SEO Report Card

SEO Report Card by UpCity lets you analyze your website to determine how it stacks up against your competitors.

In exchange for a bit of your contact information, SEO Report Card will serve up a report that covers the following:

8. Woorank

Cost: Free 14-day trial, then $49/mo for a Pro Plan or $149/mo for a Premium Plan

Purpose: Website Analysis

Woorank's in-depth site analysis helps marketers reveal opportunities for optimization and improvement. This analysis takes into account the performance of existing SEO initiatives, social media, usability, and more.

Each report is divided into eight sections:

Spanning 70+ metrics, it would be hard -- if not impossible -- to not uncover opportunities for improvement.

As a bonus, Woorank makes it easy for users to download their reviews as branded PDFs. This makes company-wide distribution and presentation more streamlined than ever.

SEMrush is a super elaborate dashboard that reports on the performance of domains as a whole and their specific pages. The website offers numerous toolkits, one of which is an SEO toolkit.

Below is one of the toolkit's flagship features, allowing you to plug in a website page to see for what keywords it's ranking, what the page's rank is for that keyword, the keyword's monthly search volume, and more.

The rest of the SEO toolkit allows you to compare your page performance to competition, analyze backlinks from other websites to your site (also known as link building), research appropriate keywords, and take advantage of similar on-page SEO opportunities.

10. Screaming Frog's SEO Spider

Cost: The LITE version is free (with limitations*), and the paid plan is $160/year

Purpose: Website Analysis

The Screaming Frog SEO Spider is a search marketer's best friend.

Designed specifically for the SEO-minded, this program crawls the websites you specify, examining the URLs for common SEO issues. This program simplifies and expedites an otherwise time-consuming process -- especially for larger websites. It could take hours or days to manually evaluate the same URLs.

Take a closer look at how it works:

The Java program is fairly intuitive, with easy-to-navigate tabs. Additionally, you can export any or all of the data into Excel for further analysis. So say you're using Optify, Moz, or RavenSEO to monitor your links or rankings for specific keywords -- you could simply create a .csv file from your spreadsheet, make a few adjustments for the proper formatting, and upload it to those tools.

*Pricing limitations include: You can only scan 500 URLs per website, and you don't have full access to configuration options and source code features. To remove these limitations, users can purchase a 12-month license for around $160/year.

11. Found's SEO Audit Tool

Want to rise above your competitors on search engine results pages?

(Who doesn't?)

The SEO Audit Tool by Found is an easy-to-use tool for marketers looking to identify (and solve) common SEO errors on a website.

Simply enter your URL and receive an instant automated SEO audit of your site. Found's SEO Audit Tool is broken down into three main parts:

Similar to Woorank, once you run a report, the tool makes it easy for you to download the results as a PDF to be easily shared within your organization.

12. Remove'em

Cost: $249 per domain or a subscription option starting at $99/mo

Purpose: Link Building

Have you ever purchased links? Spammed the comments section on a string of blogs using the same message and link? If so, we'll forgive your bad judgment just this once ... but Google won't.

Artificial or unnatural links have the potential to seriously hurt your search ranking. To clean them up, check out Remove'em:

This helpful tool scans your backlink profile and turns up a list of contact information for the links and domains you'll need to reach out to for removal. Alternatively, the tool also allows you to export the list if you wish to disavow them using Google's tool. (Essentially, this tool tells Google not to take these links into account when crawling your site.)

13. Varvy's SEO Overview Tool

This SEO auditing tool provides users with information regarding their domain strength, links, image SEO, social counts and mentions, page/technical SEO, page speed, and more.

The comprehensive report is prepared in less than a minute, and dives deep into different aspects of your website's performance. You'll notice that the tool employs green checks, red Xs, and yellow exclamation points to denote the severity of the issue.

One the our favorite features is the detailed image overview:

This section of the report focuses on the strength of the images your website employs by analyzing the alt text. If you're using too many words, missing alt text, or the alt text appears weak, the tool will notify you so that you can make any necessary changes.

You'll never get a look behind the Google curtain to learn everything they know (or don't know) about your site. But by leveraging SEO best practices and getting the most out of tools like those listed here, you can greatly increase the chances that your website will show up in response to the right search queries.

This content was originally published here.

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