Currently my JAVA_HOME is set to a JDK that is 1.4.2.
To run Maven 3, I would need 1.5 and above.
Is there any way to instruct my Maven installation to use another JDK that is installed other than changing the JAVA_HOME environment variable?
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Alexander Farber
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Oh Chin Boon
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Can't you explicitly overwrite JAVA_HOME in the script you use to start maven? You need JAVA_HOME for anything else than maven? – home Sep 03 '11 at 13:45
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Yes, JAVA_HOME is set to 1.4.2 for my development environment, namely for BEA 8.1 server and alot of things. – Oh Chin Boon Sep 03 '11 at 13:47
2 Answers
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That's pretty much the way to do it. I assume you mean you don't want to change your global JAVA_HOME. That's fine. You just need to set a different JAVA_HOME for Maven. You can easily do that by creating a file at /etc/mavenrc or ~/.mavenrc (Linux) or %HOME%\mavenrc_pre.bat (Windows) with the appropriate JAVA_HOME defined in it. Maven executes those on startup if they exist unless you've defined a variable named MAVEN_SKIP_RC. You could also modify the Maven startup scripts directly, but there's no good reason for that since it gives you these nice hooks.
Ryan Stewart
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I am not quite getting there, do i create a bat called mavenrc_pre.bat? How should that file look like? – Oh Chin Boon Sep 03 '11 at 14:41
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1Yes. Create mavenrc_pre.bat in your home directory, and put `JAVA_HOME=
` in it. That's all. – Ryan Stewart Sep 03 '11 at 14:49
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On Windows:
STEP 1:
Find apache-maven-3.2.1\bin\mvn.bat, then find and replace JAVA_HOME to JAVA_HOME_MVN. Note: Before this, make a backup of mvn.bat
STEP 2:
Create a new environment variable called JAVA_HOME_MVN and point it to the bin of whichever jdk you want to use.
YashxRaj
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This is a good attempt. Working fine for me. My JAVA_HOME_MVN environment variable points to Jdk 11 and my regular JAVA_HOME has Jdk 8 – Utpal Kumar Jul 22 '21 at 16:44