How to set java 11 path in amazon linux 2 docker image

Hi there,

To set the Java 11 path in an Amazon Linux 2 Docker image, you can use the ENV command in your Dockerfile to set the JAVA_HOME environment variable. For example:

ENV JAVA_HOME /usr/lib/jvm/java-11-openjdk

This will set the JAVA_HOME environment variable to the path where Java 11 is installed on your Amazon Linux 2 Docker image. You can then use this environment variable to run Java 11 commands, such as java and javac, from anywhere in your container.

In order for this to work, you will need to ensure that Java 11 is installed on your Docker image. You can do this by running yum install java-11-openjdk or a similar command to install the Java 11 package on your image.

Once Java 11 is installed and the JAVA_HOME environment variable is set, you should be able to run Java 11 commands in your container. For example:

$ java -version
openjdk version "11.0.9.1" 2021-11-28
OpenJDK Runtime Environment (build 11.0.9.1+1-Amazon)
OpenJDK 64-Bit Server VM (build 11.0.9.1+1-Amazon, mixed mode, sharing)

You can also add the JAVA_HOME bin directory to your PATH environment variable so that you can run Java 11 commands without specifying the full path to the java binary. For example:

ENV PATH "$PATH:$JAVA_HOME/bin"

This will allow you to run Java 11 commands simply by typing java or javac, without needing to specify the full path to the binary.

I hope this helps! Let me know if you have any other questions.