Maven / mvn - change used java version

In this short article we would like to show how to change Java version used by Maven to other one.

Practical example

The example shows how to change JAVA_HOME system variable value under Windows 10.

1. Before change:

$ mvn -v
Apache Maven 3.6.2 (40f52333136460af0dc0d7232c0dc0bcf0d9e117; 2019-08-27T17:06:16+02:00)
Maven home: C:\Program Files\apache-maven-3.6.2
Java version: 11.0.2, vendor: Oracle Corporation, runtime: C:\Program Files\Java\jdk-11.0.2
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"

2. Setting new JAVA_HOME system variable value:

3. Terminal re-run or operating system restart.

4. After change:

$ mvn -v
Apache Maven 3.6.2 (40f52333136460af0dc0d7232c0dc0bcf0d9e117; 2019-08-27T17:06:16+02:00)
Maven home: C:\Program Files\apache-maven-3.6.2
Java version: 1.8.0_201, vendor: Oracle Corporation, runtime: C:\Program Files\Java\jdk1.8.0_201\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"

Now Java 1.8 is used with mvn.