How to Install Java on Windows (Step-by-Step Guide)
Learn how to install Java 21 (Oracle and Temurin) on Windows with screenshots and easy-to-follow instructions.
How to install Oracle JDK 8 on CentOS
In this tutorial, we will show you how to install Oracle JDK 8 On CentOS. Environment : CentOS 6.8 Oracle JDK 8u102 Note This guide should work on Fedora and RedHat. 1. Get Oracle JDK 8 1.1 Visit Oracle JDK download page, look for RPM version. 1.2 Copy the download link of jdk-8u102-linux-x64.rpm and wget […]
Java Builder pattern examples
The Builder Pattern in Java is a creational design pattern that helps in constructing complex objects step by step. Here are three examples of the Builder pattern in Java: 1. Building a User Profile This example models a User with optional fields using the Builder Pattern. User.java package com.mkyong.builder; class User { private final String […]
How to Install Oracle JDK 8 On Debian
In this tutorial, we will show you how to install Oracle JDK 8 On Debian, manually. Environment : Debian 7 OpenJDK 1.7 is installed. (Switch to Oracle JDK 8 later) At the time of writing, OpenJDK 1.8 is not included in the default apt-get repository yet. I just don’t like the default apt repository schedule, […]
How to check the installed JDK version on your computer
In the Terminal, we can use `javac -version` to check the installed JDK version and `java -version` to check the installed JRE version.
Java – How to round double / float value to 2 decimal places
We can use DecimalFormat(“0.00”) or BigDecimal to round float / double to 2 decimal places.