What version of Java is installed?
Find your Java/JDK version using quick terminal commands across Windows, macOS, and Linux.
Java is disabled or not installed in this browser
Run one of the following commands to check your Java version:
java -versionjavac -versionWindows
- Open Command Prompt (Win + R, type
cmd) - Run
java -versionorjavac -version
macOS / Linux
- Open Terminal
- Run
java -versionorjavac -version
Troubleshooting
- If you get "command not found", Java may not be installed or PATH is not configured.
- On Windows, ensure JAVA_HOME and PATH include the JDK bin directory.
- On macOS with Homebrew:
brew install openjdk
What is this tool?
A simple guide with copyable commands to check your installed Java runtime and compiler versions.
Useful for setup verification, build errors, or confirming JDK compatibility.
How to check
Try these commands:
1.java -version
Shows the Java runtime version.
2.javac -version
Shows the Java compiler (JDK) version.
Common Uses
When this helps:
- Build SetupConfirm JDK version for Gradle/Maven projects.
- TroubleshootingResolve PATH/JAVA_HOME configuration issues.
- CompatibilityEnsure project requirements match your installed JDK.
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