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class Bank{
回覆刪除static int sum;
synchronized static void add(int n){
int tmp=sum;
tmp=tmp+n;
try {
Thread.sleep((int)(Math.random()*1000));
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
sum=tmp;
Thread t=Thread.currentThread();
System.out.println("sum="+sum+" 當前執行緒:"+t.getName());
}
}
class Customer implements Runnable{
@Override
public void run() {
for(int i=1;i<=3;i++){
Bank.add(100);
}
}
}
public class A14_1 {
public static void main(String[] args) {
Customer c1=new Customer();
Customer c2=new Customer();
Thread t1=new Thread(c1,"客戶1");
Thread t2=new Thread(c2,"客戶2");
t1.start();
t2.start();
}
}