JAVA高级特性第四章课后作业

1，编写一个程序，创建两个线程对象，每个线程输出1~5的数。

package kehouzuoye;

public class Number implements Runnable {
	
	@Override
	public void run() {
	for (int i = 0; i < 5; i++) {
		System.out.println(Thread.currentThread().getName()+" "+(i+1));
	}
	}
	public static void main(String[] args) {
		Number  nu = new Number();
		Thread th = new Thread(nu,"线程A");
		Thread th2 = new Thread(nu,"线程B");
		th.start();
		th2.start();
	}
}

2，张三和他的妻子各拥有一张银行卡，可以对同一个账号进行存取款操作。现账户余额为500，每人各取5次，每次100元，在取款过程存在网络延时。要求使用多线程模拟过程。

package kehouzuoye;

public class Withdrawmoney implements Runnable {
	private int money = 500;
	private int num = 0;
	boolean flga = false;

	@Override
	public void run() {
		while (!flga) {
			money();
		}
	}
	public synchronized void money() {
		if (money > 0) {
			try {
				Thread.sleep(500);
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			System.out.println(Thread.currentThread().getName() + "准备取款\n" + 
			Thread.currentThread().getName() + "完成取款！");
			money -= 100;
		} else {
			flga = true;
			System.out.println("余额不足以支付" + Thread.currentThread().getName() + "款项" + "余额为:" + money);
		}
	}
	public static void main(String[] args) {
		Withdrawmoney wi = new Withdrawmoney();
		Thread th = new Thread(wi,"张三");
		Thread th2 = new Thread(wi,"张三妻子");
		th.start();
		th2.start();
	}
}