Java Examples Archives - GeeksforGeeks

How to Create a simple TCP Client-Server Connection in Java?

Last Updated: 04 April 2024

TCP can be defined as Transmission Control Protocol. This is the standard protocol for transmitting data over a network. It provides reliabl...read more

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How to Implement a Simple Chat Application Using Sockets in Java?

Last Updated: 08 January 2025

In this article, we will create a simple chat application using Java socket programming. Before we are going to discuss our topic, we must k ...read more

How to Convert a String to a Character in Java?

Last Updated: 20 November 2024

String and char are fundamental and most commonly used datatypes in Java. A String is not a primitive data type like char. To convert a Stri ...read more

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How to Execute a SQL Query Using JDBC?

Last Updated: 24 April 2025

Java programming provides a lot of packages for solving problems in our case we need to execute SQL queries by using JDBC. We can execute a ...read more

How to Handle an IOException in Java?

Last Updated: 15 February 2024

An IOException in Java occurs when we try to perform some input or output tasks and then some issues occur. Programmers need to handle this ...read more

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How to Read and Write Binary Files in Java?

Last Updated: 06 May 2025

The Binary files contain data in a format that is not human-readable. To make them suitable for storing complex data structures efficiently, ...read more

How to Read and Write JSON Files in Java?

Last Updated: 10 October 2024

JSON (JavaScript Object Notation) is simple but powerful.. It helps the server and the client to share information. Applications like Ja...read more

How to Replace a String Using Regex Pattern in Java?

Last Updated: 07 February 2024

Regular Expressions (regex), in Java, are a tool, for searching, matching, and manipulating text patterns. Regex patterns are usually writte ...read more

Java Program to Capitalize the First Letter of Each Word in a String

Last Updated: 07 February 2024

In Java Programming, we can be able to capitalize the first letter of each word in the given String value by using toUpperCase(), toLowerCas ...read more

How to List all Files in a Directory in Java?

Last Updated: 24 April 2025

Java provides a feature to interact with the file system through the java.io.file package. This feature helps developers automate the things...read more

Java Program to Convert a String to a Currency Format

Last Updated: 07 February 2024

The NumberFormat and DecimalFromat class in Java offers a method for formatting numbers based on a location. We can define the formatting cu ...read more

How to Convert JSON Array Object to Java Object?

Last Updated: 24 April 2025

JSON arrays are useful for storing multiple values together that are related or part of the same set. For example, storing a list of items, ...read more

How to Read and Write XML Files in Java?

Last Updated: 24 April 2025

XML is defined as the Extensible Markup Language, and it is mostly used as a format for storing and exchanging data between systems. To read...read more

Convert String to LocalDate in Java

Last Updated: 29 January 2024

In this article, we will learn how to convert a String into Local Date format in Java. It will need to take a data value as a String after t ...read more

Java Programs - Java Programming Examples

Last Updated: 05 April 2025

In this article, we will learn and prepare for Interviews using Java Programming Examples. From basic Java programs like the Fibonacci serie...read more

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