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Setting Up the Java Development Environment
Step‑by‑step guide to installing the JDK, configuring environment variables, and setting up Eclipse IDE.
Setting Up the Java Development Environment
To start coding in Java you need the Java Development Kit (JDK) and an Integrated Development Environment (IDE) such as Eclipse.
Install the JDK
- Download the latest JDK from Oracle’s website or adopt OpenJDK.
- Run the installer and note the installation folder (e.g., C:\\Program Files\\Java\\jdk-21).
- Set the JAVA_HOME environment variable to that folder.
- Add %JAVA_HOME%\\bin to the system PATH variable.
- Open a command prompt and run java -version to verify.
Install Eclipse IDE
- Download “Eclipse IDE for Java Developers” from the Eclipse downloads page.
- Run the installer and choose the Eclipse IDE for Java Developers package.
- Select an installation directory and finish the setup.
- Launch Eclipse and point it to the JDK you just installed via Window → Preferences → Java → Installed JREs.
Tip: Keep your JDK and Eclipse versions compatible; newer JDKs work with recent Eclipse releases.
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