Скачать или смотреть Eclipse Temurin OpenJDK 21 installation on RHEL 9 | How to install Java 21 on Linux with JAVA_HOME

The Adoptium Working Group promotes and supports high-quality, TCK certified runtimes and associated technology for use across the Java ecosystem.
Eclipse Temurin is the name of the OpenJDK distribution from Adoptium.

In this video we are going to see how to install Eclipse Temurin OpenJDK 21 on Red hat Enterprise Linux 9 for all users with JAVA_HOME Environment Variable

In this Example:

src ---- contains two java modules IPv4Validator and IPv4ValidatorClient Modules. Each Module must contain module-info.java which is mandatory.
classes ---- will store all the compiled class files of Java Modules.

Here IPv4Validator Module contains module-info.java which exports the com.javafrm package, so that other modules can access the package and com.javafrm package contains IPv4Validator.java .
Class name and Method should be public, then only you can access this class and required methods from other modules.

Next IPv4ValidatorClient Module contains contains module-info.java which requires (calls) IPv4Validator Module.
It contains org.javafrm package which contains IPv4ValidatorClient.java (Main class) and access the class and methods from IPv4Validator Module.

Example commands:

javac --module IP4ValidatorModule -d /opt/Java-Module-Programs/Modules/classes --module-source-path /opt/Java-Module-Programs/Modules/src

javac --module IP4ValidatorClientModule -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 IP4ValidatorClientModule/org.javafrm.IPv4ValidatorClient

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