class3.java

针对越来越多的用户喜欢JAVA

class CBank
{
   private static int sum=0;
   public static void add(int n){
      int tmp=sum;
      tmp=tmp+n;   // 累加汇款总额
      try{
         Thread.sleep((int)(10000*Math.random()));  // 小睡几秒钟
      }
      catch(InterruptedException e){} 
      sum=tmp;
      System.out.println("sum= "+sum); 
  }
}

class CCustomer extends Thread // CCustomer类，继承自Thread类
{
   public void run(){    // run() method
      for(int i=1;i<=3;i++)
         CBank.add(100);  // 将100元分三次汇入
   }
}

public class Class3
{
   public static void main(String args[])
   {  
      CCustomer c1=new CCustomer();
      CCustomer c2=new CCustomer();
      c1.start();
      c2.start();
   }
}