How to install Java

How to Install Java (JDK 17)

Recommended version: JDK 17 (Latest LTS)

Step 1: Install JDK
Option 1: Using Homebrew (Recommended)

brew install openjdk@17

Option 2: Manual Installation
Download JDK 17 from:

Step 2: Set JAVA_HOME (Optional but Recommended)

Open your shell configuration file:
- zsh (default on macOS): ~/.zshrc
- bash: ~/.bash_profile
Add the following lines:

export JAVA_HOME=$(/usr/libexec/java_home -v 17)
export PATH=$JAVA_HOME/bin:$PATH

Save the file and reload the shell:

source ~/.zshrc

(or source ~/.bash_profile if using bash)

Step 3: Verify Installation
Run:

java -version
javac -version

Both commands should return version 17.x without errors.

Step 1: Install JDK

Download JDK 17 (or latest LTS) from:
1. Oracle: https://www.oracle.com/java/technologies/downloads/
2. Adoptium (OpenJDK): https://adoptium.net/
Install using default settings.

Default install path:

C:\Program Files\Java\jdk-17\

Step 2: Set Environment Variables

Open:
Control Panel → System → Advanced system settings → Environment Variables
Under System variables, click New:
Variable name: JAVA_HOME
Variable value:

C:\Program Files\Java\jdk-17

Select the Path variable → Edit → New, then add:

%JAVA_HOME%\bin

Click OK to save all changes.

Step 3: Verify Setup
Open Command Prompt
Run:

java -version
javac -version

Both commands should respond without errors and show Java 17.