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How to Configure Maven to Use a Specific Java Version?

Barbara Streisand

Oct 26, 2024 pm 03:40 PM

How to Configure Maven to Use a Specific Java Version?

Configuring Maven to Use a Specific Java Version

Maven relies on the JAVA_HOME environment variable to determine the Java version it should utilize. However, in situations where multiple Java versions are installed, it is necessary to explicitly specify the preferred version for Maven.

To set a specific Java version (e.g., Java 1.7) for Maven:

Method 1: Override JAVA_HOME Environment Variable

Before executing Maven, temporarily set the JAVA_HOME environment variable to the path of the desired Java version (e.g., export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home).
After completing Maven tasks, revert the JAVA_HOME variable to its original value.

Method 2: Edit Maven Script

Locate the Maven script (mvn/mvn.bat/mvn.cmd) in the Maven installation directory.
Open the script in a text editor.
Search for the line that specifies the JAVA_HOME variable.
Change the path to the desired Java version (e.g., MAVEN_OPTS="-Xms256m -Xmx512m -XX:MaxPermSize=256m -Djava.version=1.7").

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