Introduction

The java.lang.Process class is used to look for information about, and launch, runtime processes. If you want to understand how the Process class works, you can start by looking at the Runtime class. All Java programs include an instance of the Runtime class. It is possible to get information about the Runtime class by calling the getRuntime() method and assigning its outcome to a variable of the Runtime class. With that, it is possible to obtain information about the JVM environment that commands your program:

public class Example01 {
    public static void main(String[] args) {
        Runtime runtime = Runtime.getRuntime();
        System.out.println("Processors: " + runtime.availableProcessors());
        System.out.println("Total memory: " + runtime.totalMemory());
       ...