How can I change Java version 1.7 to 1.8 in Ubuntu?

Question

My Ubuntu machine have installed both java 1.7 and 1.8. But when I checked Java version it shows version Java 1.7 as the snapshot below. When I check Java alternative version I can see "java-8-openjdk-amd64". I am beginner to Ubuntu. Can anyone help me to change it to 1.8?

$ sudo update-alternatives --config java .... askubuntu.com/questions/315646/… — Knud Larsen
– Knud Larsen, Commented Nov 14, 2021 at 7:56

Anil · Accepted Answer · 2021-11-14 05:56:27Z

3

sdkman is a good Open source version manager for Java. It provides commands to search & install multiple versions of Java and switch between versions with

sdk use java 1.8.363-open

It can also manage other tools like Maven.

answered Nov 14, 2021 at 5:56

Anil

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Ranger · Accepted Answer · 2021-11-14 05:36:21Z

1

you can set the envirnoment variable to java 1.8 using this method Edit the /etc/profile

    sudo gedit /etc/profile

Add these lines in the end

    JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
    PATH=$PATH:$HOME/bin:$JAVA_HOME/bin
    export JAVA_HOME
    export JRE_HOME
    export PATH

like mentioned in this answer

How to set Java environment path in Ubuntu

answered Nov 14, 2021 at 5:36

Ranger

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