#Super constructor in java

[tpointtech12]

Step-by-Step Guide to Java Inheritance Constructors

Learn about constructors in Java inheritance, including how superclass constructors are called, the role of super(), and constructor overloading. Discover how to manage object initialization and hierarchy effectively with practical examples and tips.

[logitrainittraining]

The automation tester course covers the fundamental skills and knowledge in Australia for learning Automation Testing in Java. It lays a solid foundation to develop skills and knowledge required in Software Testing.

This Automation Testing Software Testing Course covers different areas of automation testing by building fundamental knowledge. Topics covered include Java installation, Java editor tools, Executable program in Java, Strings and variables, Using methods, Classes and objects in Java, Objects in Java, Calendar class, Constructors, Parameterized constructors, Super keyword, Collections framework, The List collection, ArrayList class, ArrayList, Set collection, Iterator, Accessing objects and more.

[kumarom]

Super Keyword in Java

The super keyword in Java is a reference variable which is used to refer immediate parent class object.

Whenever you create the instance of subclass, an instance of parent class is created implicitly which is referred by super reference variable.

Usage of Java super Keyword

super can be used to refer immediate parent class instance variable.

super can be used to invoke immediate parent class method.

super() can be used to invoke immediate parent class constructor.

[brilworks]

React Native Best Practices

What Does it Mean by Best Practices?

It goes in the coding world — there are no strict rules, but some guidelines (more like suggestions) that many coders tend to avoid while writing code. When you’re first starting out, it can be tempting to skip over coding guidelines. After all, your code might work just fine without them. But as your codebase grows bigger, you’ll start to realize that adhering to guidelines is essential for keeping your code healthy and maintainable.

There are several benefits that we have discussed in our Java blog; you can read our blog about the benefits of clean code and best practices.

1. Use TypeScript with Your React Native App

TypeScript is a statically typed programming language which means it requires explicitly defining the data types for variables, functions, and other elements. This not only leads to more reliable code but also helps developers catch bugs during the compilation process.

Consider the following to calculate order pricefunction calculateOrderPrice(order) { return order.price + 1200; }

The current code works fine, but it doesn’t tell us much about what properties the order object contains, which could lead further to a crash if we try to access a property that doesn’t exist.

To prevent the crash and enhance readability, we can use TypeScript. TypeScript is a programming language that adds types to JavaScript. This means that we can specify the type of each property in the object, which will help us avoid errors.interface Order { price: number; name: string; taxPercentage: number; } function calculateOrderPrice(order: Order) { const { price, taxPercentage } = order; const taxValue = price * taxPercentage; return price + taxValue; }

Here is the same function, but now you and your editor are aware of the object properties and their types in code, which makes it easier to extend the functionality.

2. Functional Components over the Class Components

In React Native, you will have two main components: Functional and Class components. But functional components are the way to go in React Native. They’re simpler, more concise, and faster than class components. This makes them easier to read, write, and test. Plus, they can improve your app’s performance.

If you’re not sure what components are, they’re functions that return React elements. So if you’re looking for a way to improve your React Native code, use functional components over class components. They’re the future of React Native development.

Class Component Exampleimport React, { Component } from 'react'; class ClassComponent extends Component { constructor(props) { super(props); this.state = { count: 0, }; } incrementCount = () => { this.setState({ count: this.state.count + 1 }); }; render() { return ( <View> <Text style={styles.h1}>Class Component</Text> <Text>Count: {this.state.count}</Text> <Button title='Increment' onPress={this.incrementCount}/> </View> ); } } export default ClassComponent;

In this class component example, we’re using the Component class from react to create a component. State is managed within the component’s constructor, and the render method defines the component’s UI.

Functional Component Exampleimport React, { useState } from 'react'; const FunctionalComponent = () => { const [count, setCount] = useState(0); const incrementCount = () => { setCount(count + 1); }; return ( <View> <Text style={styles.h1}>Functional Component</Text> <Text>Count: {count}</Text> <Button title='Increment' onPress={incrementCount}/> </View> ); }; export default FunctionalComponent;

In this functional component example, we’re using the useState hook from react to manage state. The component is defined as a simple JavaScript function that returns JSX to render the UI.

3. Import your dependencies in order

When you have a bunch of imports in one file, it could be a headache trying to find that one specific import you need if you have not organized your imports properly. Therefore it is essential to order imports in a consistent way.

At the same time, you should also ensure that the dependencies have a proper sequence of imports. If the order is not correct, it can affect how components behave and lead to bugs that are hard to find.

Here’s an example of how you can organize your imports:

External imports — react

Internal imports, like relative paths — ../button

In folder imports like ./styles.ts

The imports may be sorted alphabetically in every group

Every group must be divided by white space

import React from 'react'; import { TouchableOpacity, View } from 'react-native'; import { Button, Card } from '../components' import { MainLayout } from '../layouts' import { StyledCard } from './styles.ts'

You can use formatting tools like Eslint and Prettier to automate and enforce the correct import order to avoid such issues.

4. Use Path Alias to avoid long imports

Path aliases are a way to create shorter and more meaningful import paths in your code. This can be helpful when you have a deep or nested folder structure, and it can make your imports easier to read and understand.

For example, instead of writing a long import like this:import { IconButton } from '../../components/buttons'; import { CircleButton } from 'components/buttons'; OR import { CircleButton } from 'buttons';

Here’s how to use path aliases in both TypeScript and React Native to create shorter and more meaningful import paths in your code.

Here’s how to use path aliases in both TypeScript and React Native to create shorter and more meaningful import paths in your code.

Path Alias in TypeScript

Create or update the tsconfig.json file in your project if it doesn’t exist already.

Set the baseUrl to . , which represents the root of the directory. This sets the starting point for all path aliases.

Add path aliases to the paths object. In this example, we have two path aliases defined:

// tsconfig.json { "extends": "expo/tsconfig.base", "compilerOptions": { "strict": true, // Path alias config "baseUrl": ".", "paths": { // This needs to be mirrored in babel.config.js // Components is a directory with sub directories "components/*": ["src/components/*"], // We want to expose the exports of the buttons index file "buttons": ["src/components/buttons/index"] } } }

Now, TypeScript will be able to understand and parse the following imports:import { CircleButton } from "components/buttons" import { CircleButton } from "buttons"

2. React Native Path Alias

First, install the babel-plugin-module-resolver as a developer dependencyyarn add - dev babel-plugin-module-resolver npm install babel-plugin-module-resolver - save-dev

Now we can update the babel.config.js file to use the **module-resolver**plugin and point to our directories.**// babel.config.js** module.exports = function (api) { api.cache(true) return { presets: ["babel-preset-expo"], plugins: [ [ "module-resolver", { alias: { // This needs to be mirrored in tsconfig.json components: "./src/components", buttons: "./src/components/buttons", }, }, ], ], } }

Responsive style properties in React refer to the use of functions to create an adaptive user interface or a layout that adjusts to various screen sizes and orientations. Developing a responsive React Native app can be done in multiple ways, and one of them is by using react-native-normalize. This handy library offers functions that help you create responsive layouts effortlessly.

5. Implement Crash Analytics Tools

Crash analytics tools are like your magic tools that keep an eye on your app 24/7. They do real-time monitoring to help you identify crashes and errors. These tools analyze the crash data and give you the lowdown on what’s causing the chaos.

So, if you’re in the development process, and suddenly, the app crashes out of the blue. With the implementation of crash analytics, you can easily find the root causes of these crashes.

There are a bunch of awesome crash analytics tools out there, like Sentry, Firebase, Crashlytics, and more. They’re like your trusty companions, helping you debug and rescue your app from potential crashes.

Read more at https://www.brilworks.com/blog/react-native-best-practices/

[studentbuzz]

Constructors in Java (Session-2)

[jeremy-ken-anderson]

The Dangers of Silent Helpers

Today’s lesson was about constructors in Java.

Basically to keep the object-oriented hierarchy working properly the system has most classes expand from object. And when they expand from each other, they automatically reach for each other’s constructors.

If you have your Shape class and your Rhombus class and then you don’t make any constructors at all, the compiler will give you the basics to keep things smooth. When you call

Rhombus r = new Rhombus();

it’ll go into your Rhombus class and look for your constructor. Not finding one it’ll insert a line of code that says

super();

right at the start of your code, kicking the ball up to Shape. It’ll go into your Shape class and look for a constructor. Not finding one it’ll insert another super(); as well as inserting “extends Object” onto the end of Shape, and kick the problem up to Object. And Object has a constructor by default.

By having everything that doesn’t have a constructor point to the thing supporting it in the hierarchy AND having everything without explicit support have implicit support from the Object class which is guaranteed to have a constructor, Java makes sure everything has a constructor without the coder having to write one for the many, MANY classes where the constructor would be empty.

BUT.

This does mean there’s a default behavior where the system is adding code to your file without telling you.

Imagine you write a class with a constructor that takes an argument. And then you write a child class for it and don’t write a constructor at all for it. This will throw an error. The system will be generating a call to a constructor and the automatic call will have no arguments. But it won’t generate a constructor for you in its parent class or kick the problem up to Object, because you DID write a constructor there, just not of the type it’s looking for.

The trouble here is that the computer tells you the error is you’re calling a missing constructor, which is, strictly speaking, not true. IT is calling a missing constructor on your behalf.

This is just one of those situations you have to learn about so that you’re not stuck on two lines of problem code for an hour. And it’s the kind a programming instructor likes to teach because it’s at that intersection of theory (It’s easier to understand what this is if you know how constructors work) and practice (you need to know this so you don’t get stuck on this very common shape of bug all the time).

[deathcode-yt]

Constructor in Inheritance and Super keyword in JAVA || JAVA Tutorial in Hindi

[anantradingpvtltd]

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 ‏

: ‎ Enabled Screen Reader ‏ : ‎ Supported Enhanced typesetting ‏ : ‎ Enabled X-Ray ‏ : ‎ Not Enabled Word Wise ‏ : ‎ Not Enabled Print length ‏ : ‎ 197 pages [ad_2]

[emettradingsolutions-blog]

Website Programming - The Object-Oriented Programming (OOP) Solution

Net programming is an factor of internet web page enhancement and the function of world-wide-web programmer is pretty important just as web designer's position in net structure factor of web web site growth. Programming languages have formulated from equipment language to minimal-stage language and then to significant-degree language. The high-level language which is a language shut to all-natural language (the language we converse) is prepared employing selected methods. Noteworthy are the monolithic and structural programming approaches. With the monolithic type, you generate a full plan in a person single block. In structured programming tactic, a system is divided into blocks of codes named modules with every module accomplishing a unique activity. Basic, COBOL, PASCAL, C, and DBASE that ran on MS-DOS system could be penned using equally strategies. Next the revolution of windows operating method, it grew to become feasible to create applications employing a additional advanced structured programming solution than the kind utilized on MS-DOS platform. This is the Item-Oriented Programming (OOP) tactic wherever a system is divided into classes and each individual course is subdivided into features or methods with each and every functionality providing a unique company. C++ and Java are regular illustrations of Item-Oriented Programming (OOP) languages which were being at first made for non-website alternatives. As the preference for net programs grew much more and more according to the historic development of the world-wide-web and the historical progress of web, the need to have to improve on scripting languages ongoing to come up and a single of the ways they embarked on it was by producing scripts Object-Oriented. Java applet and PHP (Hypertext Preprocessor) are illustrations of Object-Oriented Programming (OOP) languages for world-wide-web solutions. PHP was originally non Object-Oriented but it has been absolutely upgraded to an Object-Oriented Programming language (OOP) demonstrating the three pillars of Item-Oriented Programming (OOP) - Encapsulation, Inheritance, and Polymorphism. Consequently, it is attainable to write server-side scripts in an Item-Oriented style. Object-Oriented Programming (OOP) buildings application into classes and capabilities or solutions. To use a class and accessibility the expert services rendered by every operate, you will have to build an occasion of the course. When an instance is established, an item is made which is held by an object variable. It is this object that will now be employed to accessibility each and every purpose and make use of its assistance. The syntax of course instantiation assertion for item generation may differ from language to language. In PHP, you use the new key phrase. For occasion, if you have a class with title purchaser and you want to instantiate it and use the item to accessibility purpose pick_records() in the class, you go about it this way- $cust = new shopper() $cust->select_information() The initial line developed an occasion of course shopper and an object held by object variable $cust. The 2nd line accesses the assistance offered by function choose_information() with the item variable $cust. Java way too employs the new search phrase for object generation but the application of the key phrase in C++ is unique wherever it is utilized by a pointer variable in the course of dynamic memory allocation. I pointed out before the a few pillars of Item-Oriented Programming (OOP)-Encapsulation, Inheritance, and Polymorphism. They are the integral options of PHP. Encapsulation is the approach of hiding all the particulars of an object that do not add to its crucial properties. This is achieved by producing all instance variables of a class non-public so that only the member functions of the course can access its personal instance variables. Inheritance is a situation in which a course derives a established of attributes and relevant behavior from a guardian class. The dad or mum course is known as tremendous class or foundation class and the inheriting course is identified as sub class. The member variables of the tremendous class turn into member variables of the sub class (derived class).   For those who have just about any questions about where by and tips on how to work with mql4 programming, you'll be able to e mail us from our web site. In PHP, you use the key word extends to put into practice inheritance just like Java, for instance class client extends products and solutions Polymorphism is an extension of inheritance. It is a situation when a sub class overrides a function in the super course. When a perform or method is overridden, the title and the signature of the function in the super class are retained by the overriding function in the sub class but there is a modify in the perform code. Another vital attribute of Object-oriented Programming (OOP) language is constructor. A constructor is a operate or approach bearing the identical name as its course identify and it is employed for initialization of member variables and invoked as quickly as the course is instantiated unlike other member capabilities that are invoked only with the use of the item variable. At this position, permit us use submission of data with, for instance, preset asset sign-up kind for even more illustration. Your PHP script desires to retrieve data posted from the kind, link to database, print personalized error messages and insert information into the database table. Working with the Object-Oriented Programming (OOP) strategy, you have to have four functions in the course- The constructor- to retrieve the posted information from the variety. A perform to hook up to MySQL database. A operate to insert history to the database working with the INSERT SQL statement. A perform to print tailor made error messages. Mainly because your method is in an arranged form, it is a lot easier to comprehend and debug. This will be very appreciated when dealing with prolonged and complicated scripts like individuals incorporating simple inventory broking concepts. In just the limit of the structured programming capabilities of the non Item-Oriented Programming languages of Fundamental, COBOL, PASCAL and so forth, you could arrange plan as well by dividing it into lesser workable modules. Having said that, they lack the encapsulation, inheritance, and polymorphism capabilities of Object-Oriented Programming (OOP) which demonstrates a wonderful edge of the Item-Oriented Programming (OOP) strategy.  

[justtshirts]

Java default constructor

We can write return statements inside the class. Here you will see both ways to create objects of Animal Class by using the default and parameterize constructors.Īnimal dog_tommy=new Animal("Tommy","Small Dog",5,"Black") Ī constructor doesn’t have return type while implementation, but the constructor returns the current instance of the class. Parameterize Constructor : Constructor with parameter Default Constructor : Constructor without parameter This default constructor calls the parent’s class no-argument constructor i.e super() or if no parent class extended the called constructor of Object Class i.e directly or indirectly parent class of all the class.If you declare any parameterize constructor then that is must write a default constructor.If you do not explicitly declare any constructor, then on time of compile Java compiler will automatically provide a no-argument constructor i.e also called the default constructor. All java classes must have at least one constructor.Constructors declaration with access modifiers can be used to control its access i.e so that restricts other classes to call the constructor.Constructor can not be used with keywords final, abstract, synchronized and static.Constructor always has the same name as the class name in which it exists.Parametrize Constructor: A Constructor with a number of arguments.Default Constructor: A Constructor without any argument.The constructor also contains collections of statements to execute at time object creation. In Java, Constructors are used to creating and initializing the object’s state.

[ajayalachattil]

Software Testing Online Training at Techno Master provides you a comprehensive training of the Testing life cycle and its applications under the guidance of Real-Time professionals. Our Trainers at Techno Master impart you with industry-relevant testing skills and make you a professional Software Tester.

MODULE 1

Software development life cycle

SDLC development models

Water fall model

Evolutionary development model

Agile model

Test driven development

Scrum model

MODULE 2

Types of automation

Unit test, integration, system testing

GUL testing, API testing, load testing

Smoke /sanity testing importance

Regression/ Functional testing

MODULE 3

Uses cases for testers

Writing good use cases

Elevator, mobile, phone, pen, coffee vending machine

List of technologies

Black box test technology

Boundary value analysis

Equivalence class partition

Error guessing

White box test technology

Statement coverage

Condition coverage

Path coverage

Branch coverage

Types of test cases

Positive and negative cases

UI test cases

Usability test cases

Field validation

Functional test cases

MODULE 4

Test plan document

Title

Revision history

Objective of document

Scope of document

Objective of testing

Metric collection

Project description

Critical functionality

Test data requirement

Features not to be used

Test environment

Training requirements

Effort estimation

Resource requirement

Scheduling

Test strategy

Input/ entry criteria

Exit criteria

Test suspension and resumption criteria

Test completion criteria

Acceptance criteria

Bug classification

Test deliverables

Standards to be followed

Risk analysis

MODULE 5

Bugs

Bug classifications

Bug template

Bug tracking

Bug tracking tools

Bug life cycle

Statues for bug life cycle

MODULE 6

JAVA

OO concepts

Encapsulation

Inheritance

Abstract classes, interface, final

Polymorphism

Overriding, overloading, this, super, constructor

General

Collection

Lists, sets, revise basic algorithms if time permits

Exception handling

JDBC

MODULE 7

Log4J

ANT

SVN

HUDSON

JIRA, Bugzilla

JUNIT, Test NG

Other languages

SQL

PERL

UNIX

MODULE 8

Mercury quick test pro

Introduction

Recording

Object repository

Standard checkpoints

Database checkpoints need to look

Parameterization

Data drove testing

Output values

Actions

Descriptive programming

MODULE 9

Load testing (load runner)

Fundamentals of load runner

Planning an effective load test

Load runner installation

Virtual user generator scripting

Recording and playback

Action and transactions

Parameters, checkpoints correlation

Advanced correlation

Enhance V user output log

Error handling

Introduction to scenarios

Using run-time setting

Scenarios execution

Scheduling scenarios

Performance monitors

Result analysis

Building effective load test scripts

Load runner hand on exercises

MODULE 10

Test management tools

Adding test requirements

Create tests

Executing test case manually

Analyze project progress

Run tests and analyze the results

Report and trace defects

Document generator

Executing test scripts remotely and more

The test case with requirements

Descriptive programming

MODULE 11

Manual testing real project

Take a real project and do the following in different phases of the QA lifecycle

QA basic

Requirement

Test plan

Sizing

Test case

Bug lifecycle

Log- with log4j

Build

Boundary value analysis and equivalence partitioning

End and end testing

Status reporting

UAT

Production check out

MODULE 12

OR

SOR

Basic of web syntax

Descriptive programing

Functions

Functional library

Excel integration

Option explicit

Loop

Original identifier

Get TO property

Get RO property

Showing manual test script

Error handling using script

Recovery scenario

[eggman-is-fat-mkay]

alright technically it is on your prof for never teaching you how to do that, but fr, if you put sensitive information (like an API key or, worse, login credentials) in a file that actually gets committed to a public git repo, you are basically asking to get 20 different kinds of hacked. it's like logging onto some MMO or forum or whatever and putting your password in chat.

now about the gitignore file. Super simple. Create a file in the root of your git repo called ".gitignore" exactly. open it with a text editor and put in relative paths to files, one to a line, that you want Git to, well, ignore. For example, say I have two files in my repo that I don't want Joe Random on the internet to be able to look at because I put hardcoded access tokens in them, secrets.json in my repo root and a Java class.

My .gitignore could look like this:

secrets.json

src/com/yourname/yourproject/Secrets.java

For 99% of use cases that's all there is to it! You can use wildcards to match multiple files, and you can find a full list of all features supported by .gitignore files here, but that's the gist. Note that one thing you cannot do is exclude individual lines from a single file -- either the whole file is there or it's not -- so I strongly recommend putting all your secrets in one file. If you're in a language that supports includes, like C++ or Rust, I'd put all of them there, and include that file as needed from your other code. Otherwise, either just have a source file containing constant definitions (like a Java class with no constructors or methods, only public static final attributes) or a YAML file or similar on disk which your program parses on startup. I prefer the first approach since the secrets get compiled into your program and you don't have to rely on that config file being there or waste time parsing it, although if everyone who uses your program is going to have a different version of that secret (e.g. if you're writing a Discord bot for people to use on their own computer with their own API key) a config file with the secret is definitely the way to go. It doesn't have to be anything fancy -- a JSON file will do, or even just a text file with one line containing the access token; people who host their own Discord bots are usually tech savvy enough to figure that out -- although if you can be bothered to figure out how to work your language's YAML parser you'll definitely thank yourself later when you decide you'd like to add config options.

Also keep in mind that no matter which approach you take, when you clone your repo on another computer, those files won't be there, and your program won't work. That's the point of a .gitignore file. You'll have to share those files between computers some other way. My preferred method is SFTP, but Google Drive works if you're using an operating system without SFTP support, like Windows (if you decide you like software development, you'll definitely want to look into Linux at some point). This should go without saying, but don't put it in the same repo under a different name, or in a different git repo on the same GitHub/GitLab account with a name like myproject-secrets. Or if you do, at LEAST make the second repo private. People will figure that out.

Pro tip: check your .gitignore file into Git. This will let other people know which files they'll need to provide for themselves, and, if you yourself clone the repo on another computer, will prevent you from accidentally uploading your secrets file from there.

Need to learn how .gitignore and config files work. Got marked down because I didn’t hide my API key that I used for my weather dashboard homework, inside of a .gitignore file…

But Hon, you never taught us that xoxo

[oxfordschoolofenglish]

Oxford Certified Java Professional

Oxford Certified Java Professional

Java is versatile as it can be used for a large number of things, including Software Development, Mobile Applications, and Large Systems Development, with the current statistics of it owning 88% market share as Mobile OS Android, putting it in the forefront. Oxford Software Institute, tapping its worth in the IT industry, provides the best classes in Java in Delhi. Through this course, we will provide the students a thorough understanding of the Java language and its role in the Object-Oriented World.

INTRODUCTION OF JAVA

This session will focus on History and Features of Java, Java Development Kit, Coding and Compiling through command prompt and NetBeans, Classes, Anatomy of Methods, Keywords, Data Types, Variables, Primitive / Abstract / Derived Data Types, Operators, Operator Precedence; Control Flow Statements like If-else and Switch Statement, Looping with For, While, Do…While, Break and Continue Statement, Arrays, Array of Object References, Accessing Arrays, Manipulating Arrays.

JAVA OOP CONCEPTS

In this session, we will focus on Classes and Objects, Defining A Class, Defining Instance Variables And Methods, Creating Object, Access Modifiers, Method calls via Object References, Constructors, Inheritance, extends and implements keywords in Java, Abstraction, Interfaces, Abstract and non-Abstract methods, Super class and Sub class, this keyword, super keyword, final in Java, Static variables and methods, Polymorphism, Overloading and Overriding of methods, Encapsulation, Java Bean, POJO, Getters/Setters, Memory management in Java, Heap, Stack, Package, Import statement and much more.

STRING, EXCEPTIONS AND FILE HANDLING

We will cover extensively the topic Strings, Immutability in Strings, String Creation on heap and constant pool, Method APIs on String, StringBuilder and StringBuffer, Splitting of Strings and StringTokenizer class, Exceptions - try, catch, finally, throw, throws, Rules for coding Exceptions, Declaring Exceptions, Defining and Throwing Exceptions, Errors and Runtime Exceptions, Custom Exception, Assertions, Enabling and disabling assertions in development environment, stream, Bytes vs. Characters, Java IO API, Reading and Writing to a file with APIs, Reading User input, PrintWriter Class and much more.

MULTITHREADING, COLLECTIONS AND SERIALIZATION

We will cover advance topics like Non-Threaded Applications and Threaded Applications, Multitasking – Process and Threaded, Creating Threads, States and Synchronization of threads, Concept of object and class locks, Coordination between threads, Inter-Thread Communication, Collections Framework, Collections API, Set, List, Map and Queue Interfaces and their implementation, Utility classes, Sorting collection, Primitive wrapper classes, Generics for Collections, Object Serialization, Serializable Interface, Serialization API, ObjectInputStream and ObjectOutput, readObject and writeObject.

JAVA APPLETS, SWING GUI AND JDBC

We will cover Applets, Event Handlers, Mouse and Click Events, AWT, Swing GUI, Advantages of Swing over AWT, Swing API, Swing GUI Components, Event Handlers, Sample Calculator application using Swing GUI and Swing Event handling, Introduction to JDBC, JDBC features and Architecture, java.sql package, Setting Up a Database and Creating a Schema, Writing JDBC code to connect to DB, Connection, Statement, ResultSet, Rowset, Prepared Statement, Batch Updates, ResultSetMetaData, Simple Transaction Management and their pros & cons, Features of JDBC 3.0, CRUD Operations with JDBC and much more

SOFT SKILLS

Having a technical and discipline-specific expertise can help you get to the interview room but it’s the soft skills that will make the hiring manager hand you the appointment letter. In this course, students will also learn various Soft Skills like how to communicate professionally in English, Speaking in public without hesitation, using effective gestures and postures to appear impressive, managing stress and emotions and taking successful interviews. Oxford Software Institute provides the best classes in Soft-skill training.

CERTIFICATIONS*

During this course, students will be trained for the following certifications

Oxford Certified JAVA Professional.

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Brief Guide of Top Programming Languages 2021

The world is coming on digital platforms. Due to these pandemics, every start-up and large-Enterprise has to convert and keep up with constant changes. Business is exploring ideas and now aware of how important they can stable on the mobile app. those businesses have weak and no online platform on the internet, so they will very barely survive this digitization process. Here we briefly describe the top programing language 2021.

Swift:

Swift is a powerful, compiled programming language that was created by Apple and introduced in 2014. this language is specially designed to work with iOS, OS X, and tv OS platforms. It is relatively easy to learn and one of the most user-friendly languages.

It is one of the top five most major programming languages to widely use for development on desktop, mobile phones, tablets, etc. it would be easy and simple to use in order to deploy the high-performance app. It requires bit maintenance and avoids bugs of objective-c.

Swift is a general-purpose and flexible programming language with various uses across the board app development. it performs a modern way of coding, safety, performance, and design patterns. It is easily accessible and provides a high-salable application for desktop and mobile phones. if you want to create an application for Apple products, you must have to use this programming language.

Here some Key-Feature of Swift Language:

Easy to learn

Open-source

A simple version of Objective-C

Super-easy maintenance

Easy-to-code

Future of iOS development

Objective-C

objective-c is the first object-oriented programming language by Apple to support mobile applications.  It is more vital programming for the iOS apps. Objective-C is a general-purpose programming language that includes advance features such as talk-style messaging. It has allowed the developers to develop and enable highly critical programming task with incredible ways.

Objective-C is basically used for macOS applications and operating system. A well-updated and robust programming language. It performs object base capabilities and active runtime. Objective-C are all about code safety, compilations and syntax for developers. Overall the language is easy for iOS, but language outdated versions can slow down performance.

Here Some Key Feature of Objective-C

Class and Object Creation

Simple to Understand

Duel Features Dynamic and Static

Dynamic Runtime

Expressive Message Syntax

Introspection

Dart:

Dart is an open-source programming language is developed by Google. It is mainly used to develop native and cross-platform app development. Dart is an ECMA standardize(European Computer Manufacturers Association). Dart is similar to common programming languages which are based on a specific paradigm. The reason to choose Flutter cross-platform supports the Dart programming language. Flutter is an open-source UI software development kit created by Google that uses dart language to develop beautiful, natively cross-platform mobile applications from single codes. The most giant and popular brands using flutter of their apps such as Alibaba, eBay, SQUARE, Emaar, Capital One.

Dart is primarily used to program for an intend-enable device such as smartphone, tablets, and laptops and for servers. Dart is easy to learn for programmers because of its syntax. Anyone who has already worked with C# will be able to fastly familiarize themselves with Dart. it is quickly and directly convert into javascript, Dart can work in all modern mobile and desktop browsers. Due to especial benefit and robust features, developers and startup choose flutter for mobile app development.

Some Key Feature of Dart Programming Language:

More Flexible

Named & Optional Parameter

Constant

Constructor

Null Safe Operator

Built-in Type

Cascade Notation

Callback Class

Generic type

Asynchronous functions

Kotlin:

Kotlin is a modern open-source language that features both object-oriented and function programing construct. It was developed by JetBrains. It target many platform the JVM, Android, Java script and Native. Is is more effective, safe, tool friendly and concise application. Kotlin language highly support for functional programming and easy to maintain. The excellence part of this applications is interoperable with java programming language, and it gives the permission to share code. Recently around more than 60% of android developers use this programming language to increase productivity and code safety.

Some Key Feature of Kotlin Language:

Efficiency

Null Safety

Lazy Loading Features

Extension Features

Collection and stream

Safe Calls

Platform Type

Scope Functions

JAVA:

Java is a general-purpose, class-based object-oriented programming language. Java platform is a collection of programs that help developers to build native android app development. It includes an execution engine, a compiler, and a set of libraries. It is developed a wide range of Java applications in laptops, data centers, game consoles, cell phones, etc.

Java is a multi-platform and network-centric language. It is a widely used computing platform. It is one of the secure, fast, and reliable programming languages preferred by most companies to create their projects. Java has a wide array of functionalities. Using the Java platform, we can develop android app, websites, server apps, more, etc.

The previously mentioned list is in no way, shape, or form thorough. These programming languages can be and have been, coordinated regularly. This mix and match usefulness allow developers to choose the most suitable languages for use in developing applications that give the user a superior solution with a more easy-to-use and user-friendly experience.

Since these applications gel well together so regularly, this shows precisely why the act of learning more than one sort of coding is on the rise, as on account of utilizing full stack and MERN stack, and that's just the beginning. Anybody considering getting into programming should know that these languages address the upper level in mobile app development. Along these lines, getting a jump-start on them would prove to be useful.