Simple Java program to saturate CPU's

Busy.java

package com.primordia.monba.test;

public class Busy {
    public static void main(String[] args) {
        for (int i = 0; i < 40; i++) {
            Runnable runnable = () -> {
                Thread t = Thread.currentThread();
                long l =0;
                while(true) {
                    l++;
                }
            };
            Thread t = new Thread(runnable);
            t.start();
        }
    }
}