Switching System Java
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4. Setting Up Java
Next to Set Up Oracle Java JDK 13
You can directly Copy & Paste the Commands into Terminal..sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk-13*/bin/java65
sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk-13*/bin/javac65
sudo update-alternatives --install /usr/bin/jar jar /usr/lib/jvm/jdk-13*/bin/jar65
sudo update-alternatives --install /usr/bin/javaws javaws /usr/lib/jvm/jdk-13*/bin/javaws65
Checking or Setting the System Java Version in Use with
sudo update-alternatives --config java
And for the Java Compiler instead:
sudo update-alternatives --config javac
To Switch of Java Version Just Enter the Selection Number on First, Column. :)
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5. Setting Up Env
(Optional) Setting JAVA_HOME User Environment Variable
And Edit the Bash environment Configuration filenano $HOME/.bashrc
Append:
export JAVA_HOME=/usr/lib/jvm/jdk-13[Release]
Replace [Release] with the actual one on the above Command.
Possibly to Check the JDK 13 exact PATH use in another window:ls /usr/lib/jvm/
Ctr+x to Save & Exit from nano Editor :)
Next to Load the New Bash Environment:bash
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Finally, Test New Java JDK 13 Installation.
java -version
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