本帖最后由 邱成 于 2012-9-14 07:17 编辑
public class TestDeadLock implements Runnable {
public int flag = 1; //作用是什么
static Object o1 = new Object(); //作用是什么
static Object o2 = new Object(); //作用是什么
public void run() {
System.out.println("flag=" + flag);
if(flag == 1) {
synchronized(o1) {
try {
Thread.sleep(500);
} catch (Exception e) {
e.printStackTrace();
}
synchronized(o2) {
System.out.println("1");
}
}
}
if(flag == 0) {
synchronized(o2) {
try {
Thread.sleep(500);
} catch (Exception e) {
e.printStackTrace();
}
synchronized(o1) {
System.out.println("0");
}
}
}
}
public static void main(String[] args) {
TestDeadLock td1 = new TestDeadLock();
TestDeadLock td2 = new TestDeadLock();
td1.flag = 1;
td2.flag = 0;
Thread t1 = new Thread(td1);
Thread t2 = new Thread(td2);
t1.start();
t2.start();
}
}
public int flag = 1; 这个是作为静态常量给main方法的flag赋值? 那为什么赋值为1? |
|