How to install Oracle JDK 17 in Ubuntu 22.04 LTS with JAVA_HOME Environment Variable

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java frm

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Published on January 8, 2024 5:41:44 PM ● Video Link: https://www.youtube.com/watch?v=833nDG0ndnY

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Tutorial

Duration: 8:34

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In this video we are going to see How to install Oracle JDK 17 in Ubuntu 22.04 LTS for all users with JAVA_HOME Environment Variable and How to Compile and Run Java Module Program.

In this Example.
src --- contains two java modules InsertionSort and InsertionSortClient Modules. Each Module must contain module-info.java which is mandatory.
classes --- will store all the compiled class files of Java Modules.

Here InsertionSort Module contains module-info.java which exports the com.javafrm package, so that other modules can access the package and com.javafrm package contains InsertionSort.java .
Class name and Method should be public, then only you can access this class and required methods from other modules.

Next InsertionSortClient Module contains contains module-info.java which requires (calls) InsertionSort Module.
It contains org.javafrm package which contains InsertionSortClient.java (Main class) and access the class and methods from InsertionSort Module.

Example Java Commands:

javac --module InsertionSortModule -d /opt/Java-Module-Programs/Modules/classes --module-source-path /opt/Java-Module-Programs/Modules/src

javac --module InsertionSortClientModule -d /opt/Java-Module-Programs/Modules/classes --module-source-path /opt/Java-Module-Programs/Modules/src

java --module-path /opt/Java-Module-Programs/Modules/classes --module InsertionSortClientModule/org.javafrm.InsertionSortClient

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