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Installing multiple Java Versions On Linux Mint 20

This is how you should Install multiple Java Versions On Linux Mint 20 using alternatives.

  • Install default java version 
apt install default-jdk

 

  • Install java 8
apt install openjdk-8-jdk


  •  View isntalled java versions
update-java-alternatives --list

My out put is two java versions as following
java-1.11.0-openjdk-amd64      1111       /usr/lib/jvm/java-1.11.0-openjdk-amd64
java-1.8.0-openjdk-amd64       1081       /usr/lib/jvm/java-1.8.0-openjdk-amd64


  • Check current version
java -version
mine is java 11
 
  • Change java version
update-alternatives --config java
and select the required version number

All set now can use multiple java versions and switch them easily.

Ref: https://techviewleo.com/install-java-openjdk-on-linux-mint/

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