第四周实验

/*********
 * 
 * 
 name:实现线程同步列子
 Administrator：伟
 *
 ********/


class BankAccount {  //定义银行账户类
	private static int amount = 2000;  //账户余额最初为2000
	public void despoit (int m){  //定义存款方法
		amount = amount +m;  
		System.out.println("小明存入["+ m +"]元");  
	}  
	public void withdraw(int m){ // 定义取款方法
		amount = amount - m;  
		System.out.println("张新取走["+ m +"]元");  
		if(amount < 0)  
			System.out.println("***余额不足！***");  
	}  
	public int balance(){  //定义得到账户余额的方法
		return amount;  
	}  
}  
class Customer extends Thread{  
	String name;  
	BankAccount bs;  //定义一个具体账户对象
	public Customer(BankAccount b ,String s){  
		name = s;  
		bs = b;  
	}  
	public synchronized static void cus (String name, BankAccount bs){  
		if(name.equals("小明")){  //判断用户是不是小明
			try{  
				for(int i = 0; i < 6; i++){  
					Thread.currentThread();
					Thread.sleep((int)(Math.random()*300));  
					bs.despoit(1000);  
				}  
			}  
			catch(InterruptedException e){}  
		}  
		else{  
			try{  
				for(int i = 0; i < 6; i++){  
					Thread.currentThread();
					Thread.sleep((int)(Math.random()*300));  
					bs.withdraw(1000);  
				}  
			}  
			catch(InterruptedException e){}  
		}  
	}  
	public void run(){  //定义run方法
		cus(name , bs);  
	}  
}  
public class AccountTest1{  
	public static void main(String args[]) throws InterruptedException{  
		BankAccount bs = new BankAccount();  
		Customer customer1 = new Customer(bs , "小明");  
		Customer customer2 = new Customer(bs , "张新");  
		Thread t1 = new Thread(customer1);  
		Thread t2 = new Thread(customer2);  
		t1.start();  
		t2.start();  
		Thread.currentThread();
		Thread.sleep(500);  
	}  
}