Threading
The art of Operating systems ripping running processes into much smaller strings to be delt with by the cpu.
A simple threading example in Java shows how it cycles through threads
//: c13:SimpleThread.java // Very simple Threading example. // From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002 // www.BruceEckel.com. See copyright notice in CopyRight.txt. public class SimpleThread extends Thread { private int countDown = 5; private static int threadCount = 0; public SimpleThread() { super("" + ++threadCount); // Store the thread name start(); } public String toString() { return "#" + getName() + ": " + countDown; } public void run() { while(true) { System.out.println(this); if(--countDown == 0) return; } } public static void main(String[] args) { for(int i = 0; i < 5; i++) new SimpleThread(); } } ///:~