线程问题-一个线程怎么调用另一个线程的结果（2）

public class Job1{
    public static void main(String[] args){
        //ThreadClass t=new ThreadClass();
        //RunnableClass r=new RunnableClass();
        Sums s=new Sums();
        ThreadClass t1=new ThreadClass(s);
        //Thread t1=new Thread(new ThreadClass(s));
        Thread r1=new Thread(new RunnableClass(s));
        r1.setDaemon(true);
        t1.start();
        r1.start();
    }
}
class Sums{
    public int sum;
    public void calculate(){
        for(int i=1;i<100;i++){
            try{Thread.sleep(100);
            sum+=i*i;}catch(Exception e){
                System.out.println(e);
            }
        }
    }
    public int getSum(){
        return sum;
    }
}
class ThreadClass extends Thread{
    private Sums s;
    public ThreadClass(Sums s){
        this.s=s;
    }
    public void run(){
        s.calculate();
    }
}
class RunnableClass implements Runnable{
    private Sums s;
    public RunnableClass (Sums s){
        this.s=s;
    }
    public void run(){
    for(int i=0;i<100;i++){
        try{Thread.sleep(300);
        System.out.println(s.getSum());}catch(Exception e){
            System.out.println(e);
        }
    }
    }
}

这个例子说明线程是可以传递资源的（资源是一个类实例），这样就可以在线程中调用这个实例的方法。希望大家多提提建议！谢谢撒！