

Or a better way to setup environment variable globally:.
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Update alternatives: sudo update-alternatives -install /usr/bin/java java /opt/java/jdk1.8.0_45/bin/java 100 & sudo update-alternatives -config java & sudo update-alternatives -install /usr/bin/javac javac /opt/java/jdk1.8.0_45/bin/javac 100 & update-alternatives -config javac & sudo update-alternatives -install /usr/bin/jar jar /opt/java/jdk1.8.0_45/bin/jar 100 & sudo update-alternatives -config jar For example, select the Eclipse IDE for C/C++ Developers then click INSTALL.

Eclipse packages window appears, lets choose your favorite package IDE.
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In some cases, you may need to install Oracle JDK 18 on the PATH location. Alternatively, if you prefer to download the latest Java DEB package from the terminal, use the. Finally, install Oracle Java JDK 18 using the dpkg command. OpenJDK Runtime Environment (build 11.0.15+10-Ubuntu-0ubuntu0.22.04.1) OpenJDK 64-Bit Server VM (build 11.0.15+10-Ubuntu-0ubuntu0.22.04.1, mixed mode, sharing). Then, download Oracle Java JDK 18 using the wget command in the terminal. First, install dependencies for Oracle JDK 18 installation.
