ex1

package exercise;class Message implements Runnable {    private static int taskCount = 1;    private final int id = taskCount++;    public Message() {        System.out.println("create " + id);    }    @Override    public void run() {        for (int i = 0; i < 3; i++) {            System.out.println("run " + id);            Thread.yield();        }        System.out.println("end " + id);    }}public class Ex01 {    public static void main(String[] args) {        for (int i = 0; i < 5; i++) {            Thread t = new Thread(new Message());            t.start();        }    }}