Unable to execute .jar file from terminal despite having Java installed [duplicate]

I've installed the latest release of JDK with NetBeans on Ubuntu. When I attempt to execute a .jar file from the terminal with java -jar Minecraft.jar, this is outputted:

The program 'java' cannot 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>

What are possible fixes to this issue?

1 Answer

When you install JDK manually you must check the setting of the following variables in your environment:

JAVA_HOME=~/jdk1.8.0_151
PATH=$JAVA_HOME/bin:$PATH

And you have to change the values if you move the JDK folder.