#Interface in Java

[scientecheasy]

Decode DSA with Python: Comprehensive Learning Including Python Tuple

Master Data Structures and Algorithms (DSA) with Python in this comprehensive guide. Learn key concepts step-by-step, including how Python tuples play a role in efficient coding. Whether you're preparing for coding interviews or improving your problem-solving skills, this tutorial offers practical insights and clear examples to boost your understanding of Python-based DSA. Click to read the complete guide

[mahmoudna]

“I Need Your Support to Continue My Studies and Build My Future from Gaza🍉🍉

My name is Mahmoud Naeem Abu Hatab, from Gaza.

I am a university student majoring in Software and Databases at Al-Azhar University. Since the beginning of my academic journey, I have been passionate about User Experience (UX) and User Interface (UI) design, as well as website development. These fields inspire me, and I dream of advancing my skills and building a professional career in them.

Unfortunately, during the recent war, I lost my laptop, which was essential for both my studies and work. I was forced to flee my home and relocate to southern Gaza due to the difficult circumstances. Despite my efforts to replace my laptop, the financial situation has made it impossible to afford a new one.

Without a laptop, continuing my studies or seeking job opportunities in programming and design has become extremely challenging. This directly affects my academic progress and future career.

Today, I am reaching out to ask for your support to help me purchase a new laptop. Having a laptop would allow me to resume my studies and work on programming and design projects that are crucial for improving my skills. It is a vital step towards completing my education and pursuing my dream of becoming a professional in programming and UX/UI design.

I know that the situation in Gaza is difficult, but I believe education is the only path to building a better future for myself and my family. If you are able to contribute any amount to help me get a new laptop, it would be a real opportunity for me to get back on track academically and professionally.

I am determined to keep learning and working despite the challenges, but I need your support to achieve this goal. Every donation or act of help, no matter how small, will make a significant difference in my life.

If you’d like to support me, you can donate through:

GoFundMe

OR

USDT

If you can assist in any way, please don’t hesitate to reach out to me.

Thank you for your support and kindness! 🌿

@gaza-evacuation-funds @appsa @nabulsi27 @palestinegenocide @orblesbian @palebluebutler @pallasisme @fallahifag-deactivated20240722 @vakarians-babe @sayruq @ @plomegranate @riding-with-the-wild-hunt @queerstudiesnatural @tamamita @apollos-boyfriend @riding-with-the-wild-hunt @queerstudiesnatural @palestinegenocide @sar-soor @akajustmerry @annoyingloudmicrowavecultist @feluka @marnosc @flower-tea-fairies @flower-tea-fairies @tsaricides @tsaricides @belleandsaintsebastian @ear-motif @brutaliakent @raelyn-dreams @troythecatfish @4ft10tvlandfangirl @90-ghost @paper-mario-wiki @nabulsi @prisonhannibal @beepiesheepie @walcutt @schoolhater98 @commissions4aid-international @sar-soor @zigcarnivorous@tododeku-or-bust@turtletoria @brutaliakhoa @flower-tea-fairies @schoolhater @baby-girl-aaron-dessner @sayruq @omiteo777 @malcriada @neptunerings @bat-luun @kaneverse @nightowlssleep @staretes @friendshapedplant @soon-palestine @aria-ashryver @heritageposts @magnus-rhymes-with-swagness-blog @khangerinedreams @kordeliiius @mazzikah @feluka @dlxxv-vetted-donations @girlinafairytale @a-shade-of-blue @vakarians-babe @babygoatsandfriends @self-hating-zionist @mangocheesecakes @dlxxv-vetted-donations @gazaboovintage @gazavetters @wellwaterhysteria @sar-soor @applebunch @irhabiya @sayruq @xxx-sparkydemon-xxx @junglejim4322 @reptilianspecies @dr-lapdance @tamamita @cantsayidont @fairweathermyth @dear-indies @eruthiawenluin @katealot @lenasai @stalinistqueens @ayeshjourney @gaza-evacuation-funda @el-shab-hussein @irhabiya @nabulsi @ibtisams @dlxxv-vetted-donations @tododeku @a-shade-of-blue @gaza-relief-fund @catnapdreams @northgazaupdates @buttercuparry @stuckinapril

[theropodtheroblogs]

today i learned it feels fucking impossible to get a free minecraft server running a 1.7.10 modpack unless you know esoteric coding language and even when you try to figure that shit out it doesn't fucking work so i guess i wont be able to play 1.7.10 Regrowth with friends because fuck me I guess

[arshikasingh]

Why Use Java Interface?

An interface in Java is a blueprint of a class. It has static constants and abstract methods. There are three reasons due to which interface is used.

[fortunatelycoldengineer]

What are autoboxing and unboxing? . . . . For more questions about Java https://bit.ly/3kw8py6 Check the above link

[blocks2code]

Vector Class in Java With Program Example

Vector is a collection class that implements dynamic array data structure to store elements, signifying growable array as its underlying data structure.  It accepts duplicate elements and preserves insertion order. It can hold elements of different data types and allows null value. The Vector class was introduced in Java 1.2 version and is part of the original Java API. It is similar to…

[javatarainingtipsandtrick]

What is the difference between interface and class in Java?

In Java, interfaces and classes are both fundamental constructs, but they serve different purposes and have distinct characteristics. Here are the key differences between interfaces and classes in Java:

Purpose

Class: A class is a blueprint for creating objects (instances). It defines the attributes (fields) and behaviors (methods) that objects of that class will have. Classes are used for creating and modeling objects in your application.

Interface: An interface is a contract that defines a set of abstract methods (methods without implementations) that a class must implement. Interfaces are used to define a contract for multiple classes to adhere to, allowing for polymorphism and multiple inheritance of behavior.

Inheritance

Class: Classes support single inheritance in Java, which means a class can extend only one other class. Java follows a single-inheritance model to avoid ambiguities.

Interface: Interfaces support multiple inheritance in Java. A class can implement multiple interfaces, inheriting and providing implementations for the abstract methods defined in those interfaces. This allows a class to have behaviors from multiple sources.

Methods

Class: Classes can have a mix of concrete (implemented) and abstract (unimplemented) methods. Concrete methods provide actual implementations, while abstract methods declare behavior that subclasses must implement.

Interface: Interfaces can only declare abstract methods (methods without implementations). Starting from Java 8, interfaces can also have default and static methods with implementations.

Fields

Class: Classes can have instance variables (fields) that represent the state of objects. These fields can have various access modifiers (public, private, protected, etc.) to control their visibility.

Interface: Interfaces can define constants (public static final fields), but they cannot have instance variables or fields that represent the state of an object.

Constructors

Class: Classes can have constructors to initialize object state. Constructors are called when an object is created using the new keyword.

Interface: Interfaces cannot have constructors because they cannot be instantiated directly.

Usage

Class: Classes are used to model real-world objects or concepts, encapsulating both data and behavior. They provide a blueprint for creating objects in your application.

Interface: Interfaces are used to define contracts that classes must adhere to. By implementing interfaces, classes agree to provide concrete implementations for the methods defined in those interfaces. This allows for polymorphism and code reusability.

[codeonedigest]

GraphQL Resolver Explained with Examples for API Developers

Full Video Link - https://youtube.com/shorts/PlntZ5ekq0U Hi, a new #video on #graphql #resolver published on #codeonedigest #youtube channel. @java @awscloud @AWSCloudIndia @YouTube #youtube @codeonedigest #graphql #graphqlresolver #codeo

 Resolver is a collection of functions that generate response for a GraphQL query. Actually, resolver acts as a GraphQL query handler. Every resolver function in a GraphQL schema accepts four positional arguments. Root – The object that contains the result returned from the resolver on the parent field. args – An object with the arguments passed into the field in the query. context – This is…

[sunos-official]

Welcome to my blog!!

I'm @sunos-official, a blog to celebrate the wonders of the BSD (and later SVR4)-based Unix from Sun Microsystems in all of its iterations (although this blog will primarily focus on versions up to and including Solaris 9, with some appearances of Solaris 10).

I'll be working on populating the queue with fun Sun Microsystems-related goodness. In the mean time, enjoy some SunOS user interfaces!!

Pictured, clockwise from top left are:

SunView, SunOS 4

OpenWindows 3, SunOS 4

Common Desktop Environment, Solaris 8

Java Desktop System, Solaris 10

[animacion-marina]

How to resize image without losing quality

Supervised Learning: KNN is a supervised learning algorithm, meaning it learns from labeled data to make predictions. Instance-Based Learning: KNN is also considered an instance-based or lazy learning algorithm because it stores the entire training dataset and performs computations only when making predictions. 

Use Java Maven Project For Image Resize

media stands out as the best tool for resizing pictures. With its user-friendly interface and advanced resizing capabilities, Shrink. media allows you to adjust your pictures' dimensions and file sizes while maintaining excellent visual quality.

Boof CV for Java Image Processing

Java CV for Java Image Processing

ImageJ for Java Image Processing

Boof CV is a comprehensive library designed for real-time computer vision and image processing applications. It focuses on providing simple and efficient algorithms for tasks such as image enhancement, feature detection, and object tracking.

[scientecheasy]

Encapsulation in Java – A Complete Guide

Learn everything about Encapsulation in Java with Scientech Easy's beginner-friendly guide. Understand how encapsulation helps in data hiding, improves code maintainability, and secures your Java applications. This comprehensive article covers its real-world use, syntax, and practical examples to help you grasp the concept easily. Perfect for students and developers looking to strengthen their OOP fundamentals.Scientech Easy for clear explanations and step-by-step learning on Java programming topics. Start mastering encapsulation today!

[warningsine]

All right, since I bombarded a poor mutual yesterday...

Privacy is not security and security is not privacy. These terms are not interchangeable, but they are intrinsically linked.

While we're at this, anonymity =/= security either. For example, Tor provides the former, but not necessarily the latter, hence using Https is always essential.

It is impossible to have privacy without security, but you can have security without privacy.

A case in point is administrators being able to view any data they want due to their full-access rights to a system. That being said, there are ethics and policies that usually prevent such behavior.

Some general tips:

Operating System: Switch to Linux. Ubuntu and Linux Mint are widely used for a reason. Fedora too. And don't worry! You can keep your current operating system, apps and data. If you're on a Mac computer, you can easily partition your hard drive or SSD by using Disk Utility. If you're on Windows, you can follow this guide.

You want to go a step further? Go with Whonix or Tails. They're Linux distributions as well, but they're both aiming for security, not beauty so the interface might not be ideal for everyone. Many political activists and journalists use them.

You want anonymity? Then you need to familiarize yourself with Tor. Also, Tor and HTTPS and Tor’s weaknesses. When you're using it, don't log in to sites like Google, Facebook, Twitter etc. and make sure to stay away from Java and Javascript, because those things make you traceable.

Alternatives for dealing with censorship? i2p and Freenet.

Is ^ too much? Welp. All right. Let's see. The first step is to degoogle.

Switch to a user-friendly browser like Firefox (or better yet LibreWolf), Brave or Vivaldi. There are plenty of hardened browsers, but they can be overwhelming for a beginner.

Get an ad blocker like Ublock Origin.

Search Engine? StartPage or Duckduckgo. SearXNG too. Like I said degoogle.

Get a PGP encrypted e-mail. Check Protonmail out.

There's also Tutamail that doesn't cover PGP, but uses hybrid encryption that avoids some of the cons of PGP.

Skiff mail is also a decent option.

Use an e-mail aliasing service such as SimpleLogin or AnonAddy.

Check OpenPGP out. Claws Mail is a good e-mail client for Windows and Linux, Thunderbird for Mac OS.

Gpg4win is free and easy to use for anyone that wants to encrypt/decrypt e-mails.

Instead of Whatsapp, Facebook messenger, Telegram etc. use Signal for your encrypted insant messaging, voice and video calls.

Get a metadata cleaner.

Get a firewall like Opensnitch, Portmaster or Netguard which can block Internet for trackers.

Alternatively, go with a private DNS that blocks these trackers. NextDNS is a good paid service. Rethink a good free option.

Replace as many of your applications as you can with FOSS (free and open source) ones. Alternativeto can help you.

Always have automatic updates on. They are annoying af, I know, but they are necessary.

Keep your distance from outdated software.

Always have two-factor authentication (2FA) enabled.

Do not use your administrator account for casual stuff. If you're on Linux, you probably know you can be sudo, but not root.

On Linux distributions use AppArmor, but stay away from random antivirus scanners. Other distributions default to SELinux, which is less suited to a beginner.

Never repeat your passwords. If you can't remember them all, use a password manager like KeePass.

Encrypt your drive.

Honestly, VPNs have their uses and ProtonVPN, Mullvad and Windscribe are decent, but eh. If you don't trust your ISP, why would you trust the VPN provider that claims they don't log you when you can't verify such a thing?

[moose-mousse]

A thing that still blows my mind is that C++ is an object oriented language.

And most do not know what that means! :D

So we have the abstraction paradime. Badically having private and public stuff. Public interfaces and private implementation with the interface being some sort of abstraction. I mainly mentions this because that is SEPERATE from object oriented.

And then we have object oriented. Basically inheritance.

As in, software can inheret other software and extend it.

So in C++ class DERIVED can inherentclass BASE. And that means class DERIVED can be used both as class DERIVED and class BASE

Many languages facilitates the use of object oriented design like this.

But some languages are also object oriented.

As in, C++ is build so it inherits C

So you can use C++ as either C or C++

And Python inherets C++

Yes. You can write a program only in C in Python

Kotlin inherets Java.

Many languages do this. Because different languages does different things. If the different things can be described as different abstraction layers then it might be smart to let the higher abstraction level ones inheret from the lower abstraction level ones

Well written Python contains C for the very low level stuff, C++ for efficient safe use of HAL layer above it, and python for the system stuff

But if your python program have only higher lever stuff, it only needs to contain Python!

It is so flexible and neat! :D

[fortunatelycoldengineer]

What is the purpose of the System class? . . . . For more questions about Java https://bit.ly/3kw8py6 Check the above link

[blocks2code]

ArrayList Class in Java With Program Example

Arraylist is a child class of AbstractList and implements List interface. It represents dynamic array that can grow or shrink as needed. In case of standard array, one must know the number of elements about to store in advance. In other words, a standard array is fixed in size and its size can’t be changed after its initialisation. To overcome this problem, collection framework provides…

[javatarainingtipsandtrick]

What is interface and abstract class in Java?

In Java training, both interfaces and abstract classes are used to define abstract types, which means they cannot be instantiated directly but serve as blueprints for concrete classes to implement or extend. However, there are key differences between interfaces and abstract classes in terms of their functionality and usage:

Abstract Class

Keyword: Abstract classes are defined using the abstract keyword.

Methods: Abstract classes can have both abstract (unimplemented) and concrete (implemented) methods. Abstract methods are declared using the abstract keyword and must be implemented by concrete subclasses.

Fields: Abstract classes can have instance variables (fields) that can be inherited by subclasses. These fields can have access modifiers like public, private, or protected.

Constructor: Abstract classes can have constructors. These constructors are typically used to initialize fields in the abstract class.

Inheritance: Abstract classes support single inheritance, which means a Java class can extend only one abstract class. This can be a limitation when a class needs to inherit from multiple sources.

Usage: Abstract classes are used when you want to create a common base class with some default implementation that can be shared among multiple subclasses. Subclasses can extend the abstract class and provide concrete implementations for the abstract methods.

Interface

Keyword: Interfaces are defined using the interface keyword.

Methods: Interfaces can only have abstract methods (methods without implementation). In Java 8 and later versions, interfaces can also have default and static methods with implementations.

Fields: Interfaces can define constants (public static final fields), but they cannot have instance variables or non-constant fields.

Constructor: Interfaces cannot have constructors, as they cannot be instantiated directly.

Inheritance: Java supports multiple inheritance through interfaces, which means a class can implement multiple interfaces.