package Thread.Basic; /* *synchronized同步锁： *当一个线程访问”对象“的synchronized方法或同步块，其他线程访问对该对象的同步方法或同步块将会被阻塞 * *比较两种情况的区别 * */ public class SynchronizedTest2_1 { public static void main(String[] args) { //synchronized中this是myRunnable对象，对myRunnable访问互斥，必须等myRunnable中全部执行完毕后才能执行 System.out.println("-----synchronized Runnable"); myRunnable myRunnable=new myRunnable(); Thread thread1=new Thread(myRunnable,"thread1"); Thread thread2=new Thread(myRunnable,"thread2"); thread1.start(); thread2.start(); try { Thread.sleep(1000); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } //synchronized中this指Thread对象，新建了两个不同的锁，没有互斥发生 System.out.println("--------synchronized Thread"); Thread thread3=new myThread("thread3"); Thread thread4=new myThread("thread4"); thread3.start(); thread4.start(); } } class myRunnable implements Runnable{ public void run() { synchronized(this){ for(int i=0;i