java:线程，多个线程作用于同一个runnable对象

package com.chnfuture;

public class MultiThread {

    /**
     * @param args
     * @throws InterruptedException 
     */
    public static void main(String[] args) throws Exception {
        // TODO Auto-generated method stub
        R r = new R();
        new Thread().start();
        for(int i=0;i<10;i++){
            new Thread(r).start();
        }
    }

}

class MyThread extends Thread{
    public int x = 0,i;
    @Override
    public void run() {
        // TODO Auto-generated method stub
        super.run();
        for(i=0;i<100;i++){
            try {
                Thread.sleep(10);
            } catch (Exception e) {
                // TODO: handle exception
            }
            System.out.println(x++);
        }
    }
}

class R implements Runnable{

    private int x = 0;
    @Override
    public void run() {
        // TODO Auto-generated method stub
        for(int i=0;i<100;i++){
              try{
                Thread.sleep(10);
              }catch(Exception e){}
              System.out.println(x++);
        }
    }
}