how to change java version ubuntu code example
Example 1: how to change java version in linux
$ sudo update-alternatives --config java
Example 2: change java version command line debian
sudo update-alternatives --config java
Example 3: linux change java
sudo update-java-alternatives -s java-8-oracle
export JAVA_HOME=/usr/lib/jvm/java-8-oracle/
export PATH=$PATH:$JAVA_HOME
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