* 0 /usr/lib/jvm/java-11-openjdk-amd64/bin/javac 1111 auto modeġ /usr/lib/jvm/java-11-openjdk-amd64/bin/javac 1111 manual modeĢ /usr/lib/jvm/java-8-openjdk-amd64/bin/javac 1081 manual mode There are 2 choices for the alternative javac (providing /usr/bin/javac). OpenJDK 64-Bit Server VM (build 25.302-b08, mixed mode) Update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java to provide /usr/bin/java (java) in manual mode Press to keep the current choice, or type selection number: 2
* 0 /usr/lib/jvm/java-11-openjdk-amd64/bin/java 1111 auto modeġ /usr/lib/jvm/java-11-openjdk-amd64/bin/java 1111 manual modeĢ /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java 1081 manual mode There are 2 choices for the alternative java (providing /usr/bin/java). I’ll change mine from Java 11 to Java 8: $ sudo update-alternatives -config java Once you have a list of Java version, set a default one by running the command. Step 2: Set default Java version on Ubuntu / Debian Identify the version you wan to change to then proceed to next step. You’ll get a list of all Java editions that are installed on your Debian / Ubuntu system.
To get a list of installed Java versions, run the command: $ sudo update-java-alternatives -list Step 1: Checking Java versions installed on Ubuntu / Debian
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