JAVA模拟多线程

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代码为从别的帖子COPY而来。http://blog.csdn.net/olojiang/archive/2007/04/05/1552505.aspx

如有造成不良影响，我立刻删除。并致以最深刻的道歉！

package practice;

public class BankAccount {
    int balance = 200;
    public int getBalance(){
        return balance;
    }
    public void withdraw(int amount){
        balance = balance - amount;
    }
}

-------------------------------------------------------

package practice;

public class RyanAndMonicaJob implements Runnable{

    private BankAccount account = new BankAccount();


    public static void main(String[] args){
        RyanAndMonicaJob runner = new RyanAndMonicaJob();
        Thread one = new Thread(runner);
        Thread two = new Thread(runner);
        one.setName("A");

        try {
   one.sleep(500);
  } catch (InterruptedException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
        two.setName("B");
        one.start();
        two.start();
    }

    public void run(){
        for(int i=0; i< 10; i++){
            withdraw(30);
        }
        if(account.getBalance()<0){
            System.out.println("帐户余额不足!");
        }
    }
    private void withdraw(int amount){
        if(account.getBalance()>amount){
            try{
                System.out.println("线程"+Thread.currentThread().getName() +"（正在从 USER——001帐户执行取30快钱操作.....！） ");
                Thread.sleep(8000);
            }catch(Exception e){
                e.printStackTrace();
            }

            account.withdraw(amount);
            System.out.println("线程 " + Thread.currentThread().getName() + " 取30后, 帐户余额是: " + account.getBalance());
        }else{
            System.out.println("sorry " + Thread.currentThread().getName() + " 钱不够取！！！帐户余额是: " + account.getBalance());
        }
    }
}