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Programming Language / Java

Java

9.3K+ posts

Deep Copy in Java

Last Updated: 14 October 2025

In Java, Deep Copy (or Deep Cloning) refers to the process of creating a completely independent copy of an object, including all the objects referenced within it. This ens...read more

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Concurrency Problems in Java

Last Updated: 11 October 2025

In Java, concurrency enables multiple threads to execute simultaneously, thereby enhancing performance and efficiency. However, improper handling of shared resources can c...read more

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Java-Multithreading

Reserved Words in Java

Last Updated: 06 October 2025

In Java, reserved words are predefined identifiers that have a specific meaning in the language. They cannot be used as variable names, method names, class names, or ident...read more

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Types of Java Variables

Last Updated: 03 October 2025

In Java, variables are containers that store data values, such as numbers, text, or Boolean values. Java variables are categorized into different types based on their scop...read more

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Java Core Concepts Interview Questions

Last Updated: 27 August 2025

In Java, Input/Output (I/O) and related concepts like streams, classloaders, packages, and keywords play a key role in building robust applications. These fundamentals hel...read more

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Technical Interview Questions

Java Coding Practice Problems

Last Updated: 11 August 2025

Java coding practice problems help learners and professionals improve their programming skills through real-world challenges, covering topics like data structures, algorit...read more

Careers & Jobs in Java

Last Updated: 11 August 2025

Careers in Java are in high demand, as the language is widely used across industries. Java developers work on applications for web, mobile, enterprise systems and cloud pl...read more

Companies That Use Java

Last Updated: 11 August 2025

Java is used by many leading companies because it runs on any platform, scales well, and delivers strong performance. It powers systems in technology, finance, e-commerce ...read more

Introduction to Mockito

Last Updated: 30 September 2025

Mockito is an open-source and widely used mocking framework for Java applications. It allows developers to create mock objects, simulated objects that mimic the behavior o...read more

Race Conditions

Last Updated: 11 August 2025

A race conditionoccurs when multiple threads read and write the same variable, i.e., they have access to shared data and try to change it at the same time. In such a scena...read more

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Java Security, Monitoring & DevOps Interview Questions

Last Updated: 25 August 2025

This highlights crucial interview questions related to security, observability, and deployment practices in Java microservices. It covers authentication and authorization ...read more

Java Microservices Architecture & Development Interview Questions

Last Updated: 28 August 2025

Java Microservices Architecture is a style of designing applications where the system is broken into small, independent services, each responsible for a specific function ...read more

Java Microservices

Java Advanced Topics Interview Questions

Last Updated: 25 August 2025

This covers key advanced Java interview topics with questions and in-depth answers1. What is Exception Handling How many types of exceptions can occur in a Java program?...read more

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Java Collections & Generics Interview Questions

Last Updated: 16 October 2025

Java Collections Framework (JCF) is a standard library that provides data structures and algorithms to store, retrieve and manipulate data efficiently. It is one of the mo...read more

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Java-Collections

Java OOP Interview Questions

Last Updated: 27 August 2025

Java is a pure object-oriented programming language (with minor exceptions like primitives). OOP is one of the most frequently tested topics in interviews. It models real-...read more

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Java-Object Oriented

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