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Programming Language / Java

Java

9.3K+ posts

Monitor in Java

Last Updated: 30 October 2025

A monitor in Java is a synchronization mechanism that controls concurrent access to an object. It ensures that only one thread can execute critical section (a block of cod...read more

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Java-Multithreading

What is Lock in Java

Last Updated: 30 October 2025

A lock is a synchronization mechanism that allows only one thread to access a shared object or class at a given time. When a thread acquires a lock, other threads attempti...read more

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Java-Multithreading

java.util.regex Package

Last Updated: 31 October 2025

The java.util.regex package in Java provides classes for matching character sequences against regular expressions. It allows developers to define complex search patterns a...read more

java-regular-expression

Previous() Method in Java Collections

Last Updated: 28 October 2025

The previous() method in Java is a part of the ListIterator interface, which allows bidirectional traversal of elements in a list. It moves the cursor one step backward in...read more

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Java-Collections

hasPrevious() Method in Java Collections

Last Updated: 28 October 2025

The hasPrevious() method is provided by the ListIterator interface in Java. It is used to check whether there is a previous element while traversing a list in the reverse ...read more

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Java-Collections

hasNext() Method in Java Collections

Last Updated: 28 October 2025

The hasNext() method is provided by both the Iterator and ListIterator interfaces in Java. It is used to check whether the iteration has more elements before calling the n...read more

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Java-Collections

next() Method in Java Collections

Last Updated: 28 October 2025

The Iterator and ListIterator interfaces provide the next method. It is used to retrieve the next element in a collection while traversing through it. It returns the next ...read more

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Java-Collectors

Last Updated: 27 October 2025

A Java Cursor is an object that is used to iterate, traverse, or retrieve a Collection or Stream object’s elements one by one.Cursors allow sequential access to each eleme...read more

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Java-Collectors

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

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