标签:star pack get bsp private sync span package tar
1 package zzg; 2 3 public class ThreadTest { 4 private int j; 5 public static void main(String[] arge){ 6 ThreadTest t1 = new ThreadTest(); 7 Inc inc = t1.new Inc(); 8 Dec dec = t1.new Dec(); 9 for(int i=0;i<2;i++){ 10 Thread t = new Thread(inc); 11 t.start(); 12 t = new Thread(dec); 13 t.start(); 14 } 15 } 16 private synchronized void inc(){ 17 j++; 18 System.out.println(Thread.currentThread().getName() + "-inc:" + j); 19 } 20 private synchronized void dec(){ 21 j--; 22 System.out.println(Thread.currentThread().getName() + "-inc:" + j); 23 } 24 class Inc implements Runnable{ 25 public void run(){ 26 for(int i=0;i<100;i++){ 27 inc(); 28 } 29 } 30 } 31 class Dec implements Runnable{ 32 public void run(){ 33 for(int i=0;i<100;i++){ 34 dec(); 35 } 36 } 37 } 38 }
设计4个线程,其中两个线程每次对j增加1,另外两个线程对j每次减少1
标签:star pack get bsp private sync span package tar
原文地址:http://www.cnblogs.com/jummy/p/7119913.html