If you cannot install Java and see Java Installation Not Completed, Unable to install Java, There are errors in the following switches, use these fixes.

Here are the three easiest ways to fix Java’s “not recognized as an internal or external command” error: Install or reinstall Java and the JDK on your computer Add Java’s bin directory to the computer ...

<tl;dr> To fix the Eclipse “No Java virtual machine was found” error, simply edit the eclipse-inst.ini file and add the -vm flag, which points it to the java utility in the JDK bin directory: ...

How can players fix the JNI Error? In most cases, the JNI error can be fixed simply by updating Java on the device to match the latest release. In this case, it's Java 16.

This post explains how to install Java or check which version is running on your machine. Install on any OS, and learn about the JDK.