test.java

thread

package com.test;

public class Test {

	int index = 1000;

	public synchronized void out(int i) {
		int k = index;
		try {
			Thread.sleep(10);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		k = k - i;
		index = k;
	}

	public void in(int i) {
		synchronized (this) {
			int k = index;
			
			k = k + i;
			index = k;
		}
	}

	public static void main(String[] args) {

		Test t = new Test();

		ThreadTest t1 = new ThreadTest("Thread1", t);
		ThreadTest2 t2 = new ThreadTest2("Thread2", t);
		// t1.setPriority(5);
		// t2.setPriority(5);
		t1.start();
		t2.start();

		while (t1.isAlive() || t2.isAlive()) {

		}

		System.out.println("index:" + t.index);

	}
}