jtop is an experimental, interactive process viewer, just like the awesome htop. Unlike htop, jtop is written in pure Java (who would have guessed…) and makes use of the new Java 22 Foreign Function & Memory API, where needed.

It will never be as feature-complete as htop, of course. This is just a showcase of what you can do with Java 22.

• Compiling and running

To compile, all you need is Java 22 or later on your system. Point the environment variable JAVA_HOME to it. For example, when using sdkman, just install java by executing:

Then run the build with tests:

The app can then be executed like so: