How to run a Java program using Command Prompt First things first, you will have to write the code that you want to run and save that as a Java executable file.

Virtual threads take the responsibility for allocating system resources out of your application code and into the JVM. Here's a first look at virtual threads in Java 21.

To implement the Java virtual machine correctly, you need only be able to read the class file format and correctly perform the operations specified therein.