Installing WSL is ...

If you haven't installed it yet, Let's install Windows Subsystem for Linux! Please refer to it. I can install various packages now, but I installed Ubuntu.

Check if Java environment is included

Check if the execution environment is installed with the following command.

java -version

If it is not installed, the following message will be output.

The program 'java' can be found in the following packages:
 * default-jre
 * gcj-5-jre-headless
 * openjdk-8-jre-headless
 * gcj-4.8-jre-headless
 * gcj-4.9-jre-headless
 * openjdk-9-jre-headless
Try: sudo apt install <selected package>

If the path does not pass, it will be displayed in the same way

Java environment installation

This time I will install openjdk

sudo apt install openjdk-9-jre-headless

JAVA_HOME settings

Find out what can be set in JAVA_HOME

sudo update-alternatives --list java

If you enter 8 and 9, the output will be as follows.

/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
/usr/lib/jvm/java-9-openjdk-amd64/bin/java

Set using the export command. The path / bin / java output above is not required.

export JAVA_HOME=/usr/lib/jvm/java-9-openjdk-amd64

Now you can run Java

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