【多線程】synchronized同步方法

public class SynchronizedTest2 {
	public static void main(String[] args) {
		ThreadTest t1 = new ThreadTest();
		new Thread(t1).start();
		new Thread(t1).start();
		System.out.println(t1.call());
	}
}
class ThreadTest implements Runnable{
	private int x;
	private int y;
	@Override
	public synchronized void run() {
		for(int i=0;i<4;i++){
			x++;
			y++;
			try {
				Thread.sleep(200);
			} catch (InterruptedException e) {
				System.out.println("線程出錯了！！！");
			}
			System.out.println(Thread.currentThread().getName() + " x==" + x + ",y==" + y + " " + i);
			
		}
	}
	public synchronized String call(){
		String name = Thread.currentThread().getName();
		return "hellow  " + name;
	}
}