package cn.oracle1;

public class Demo03 {

 private int a = 1;

 public void calc(int times) {

  a++;  System.err.println(times + "," + Thread.currentThread().getName() + " a is:" + a);// 2  a--; }

 Thread t = new Thread() {

  public void run() {    for (int i = 0; i < 10; i++) {     calc(i);   }  }; };

 Thread t2 = new Thread() {

  public void run() {    for (int i = 0; i < 10; i++) {     calc(i);   }  }; };

 public static void main(String[] args) {

  new Demo03(); }

 public Demo03() {

  t.start();  t2.start(); }}