How to Fix "Eclipse Unable to Locate Java Runtime"

If Eclipse is unable to locate the Java runtime, it means that the Java Development Kit (JDK) is either not installed or not properly configured in Eclipse.

To resolve this issue, follow these steps: Start by verifying that the correct JDK is installed on your system.

Go to Control Panel > System > Advanced System Settings > Environment Variables (on Windows) or check the system preferences on macOS to see if the JAVA_HOME environment variable is set.

If it's not set, download and install the appropriate JDK version from the Oracle website.

Once the JDK is installed, configure Eclipse to recognize it.

Open Eclipse and go to Window > Preferences > Java > Installed JREs.

Here, check if the correct JDK is listed.

If it’s missing, click Add and select the installed JDK.

If you already have the correct JDK installed, but Eclipse still can’t locate it, check the eclipse.ini file located in the Eclipse installation directory.

This file contains settings related to Eclipse’s configuration, including the Java runtime.

Open the file and look for the -vm argument, which specifies the path to the Java runtime.

Ensure that the path is pointing to the correct JDK installation folder.

For example, the -vm line should look like this: -vm C:/Program Files/Java/jdk1.8.0_281/bin/javaw.exe.

If the path is incorrect or missing, update it with the correct path to the JDK executable.

If you're using a specific version of Java for your project, ensure that Eclipse is using that version.

To check, go to Window > Preferences > Java > Installed JREs and select the correct JDK.

If Eclipse is still unable to locate the Java runtime after updating the settings, try restarting Eclipse or your system to ensure that all environment variables are properly applied.

By following these steps, Eclipse should be able to locate the Java runtime and run without issues.