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作者 Re:请大家帮我改一下这个程序好吗? [Re:joelwx]
dumxz





发贴: 4
积分: 0
于 2006-02-17 23:19 user profilesend a private message to usersearch all posts byselect and copy to clipboard. 
ie only, sorry for netscape users:-)add this post to my favorite list
我根据您说的修改过了,怎么还是出现错误呀。
public class Li904 implements Runnable {
public Li904(Account acc) {
this.acc = acc;
}
public void run() {
acc.deposit(20.0f);
acc.withdraw(10.0f);
}

private static int NUM_OF_THREAD = 100;
static Thread[] threads = new Thread[NUM_OF_THREAD];

public static void main(String[] args){
final Account acc = new Account("王红", 1000.0f);
for (int i = 0; i< NUM_OF_THREAD; i++) {
Li904 my = new Li904(acc);
threads[i] = new Thread(my);
threads[i].start();
}
for (int i=0; i<NUM_OF_THREAD; i++){
try {
threads[i].join(); //等待所有线程运行结束
} catch (InterruptedException e) { }
}
System.out.println("完成,王红的帐户余额为:" + acc.getBalance());
}
}

class Account {
String name;
float amount;

public Account(String name, float amount) {
this.name = name;
this.amount = amount;
}

public void deposit(float amt) {
float tmp = amount;
tmp += amt;

try {
Thread.sleep(1);//模拟其它处理所需要的时间,比如刷新数据库等
} catch (InterruptedException e) { }

amount = tmp;
}

public void withdraw(float amt) {
float tmp = amount;
tmp -= amt;

try {
Thread.sleep(1);//模拟其它处理所需要的时间,比如刷新数据库等
} catch (InterruptedException e) { }

amount = tmp;
}

public float getBalance() {
return amount;
}
}




话题树型展开
人气 标题 作者 字数 发贴时间
6167 请大家帮我改一下这个程序好吗? dumxz 1446 2006-02-17 13:26
5179 Re:请大家帮我改一下这个程序好吗? joelwx 37 2006-02-17 16:04
5328 Re:请大家帮我改一下这个程序好吗? joelwx 358 2006-02-17 16:11
5051 Re:请大家帮我改一下这个程序好吗? dumxz 1352 2006-02-17 23:19
5027 Re:请大家帮我改一下这个程序好吗? dumxz 10 2006-02-17 23:26
5705 请高手指教 xingchao 1610 2006-02-25 19:48

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