Install Jdk on Ubuntu

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Learn about how to install Jdk on Ubuntu

To Check Java version being used

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java -version

Install OpenJDK 8. The typical installation path is /usr/lib/jvm/java-8-openjdk-amd64/

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sudo apt install openjdk-8-jdk

Optional: install OpenJDK 8 source code

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sudo apt install openjdk-8-source

Install OpenJDK 11. The typical installation path is /usr/lib/jvm/java-11-openjdk-amd64/

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sudo apt install openjdk-11-jdk

Optional: install OpenJDK 11 source code

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sudo apt install openjdk-11-source

To get OpenJDK 17

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sudo apt install openjdk-17-jdk

To check the Java Home environment variable

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echo $JAVA_HOME

Setup environment variable, edit ~/.bashrc file

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# Java
JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
PATH=$PATH:$JAVA_HOME/bin

To set default JDK

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sudo update-alternatives --config java

Reference