Java1-王蕊芳1407094106

[RuiFangW]

1. 作业一

        Iterator<Sheep> iter=sheepList.iterator();
        int num=0;
        while(iter.hasNext()&&num<3){
            Sheep l=(Sheep)iter.next();
//      1.  if((l.name).equals("懒羊羊")){
//              iter.remove();
//          }
//      2.  if(sheepList.size()>2){
//              iter.remove();
//          }
//      3.  iter.remove();
//          num++;
        }
        for(int i=0;i<sheepList.size();i++)
        {
            //Sheep l=iter.next();
            System.out.println(((Sheep)(sheepList.get(i))).name);   
        }

2. 作业二

        String[] filenames=manyfile.list();
        for(int i=0;i<filenames.length;i++){
            String path=filenames[i];
            file=new File(manyfile,filenames[i]);
            FileOutputStream oos=null;
            String s="我真"+i;
            try {
                oos=new FileOutputStream(file);
                try {
                    oos.write(s.getBytes());
                    //oos.write(i);
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

            } catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

        }

3. 作业三

public static void main(String[] args) {
        ThreadExtend h1=new ThreadExtend("一号");
        ThreadExtend h2=new ThreadExtend("二号");
        ThreadExtend h3=new ThreadExtend("三号");

        h1.start();
        h2.start();
        h3.start();//Thread

        Thread r1=new Thread(new ThredImp1());
        Thread r2=new Thread(new ThredImp1());
        Thread r3=new Thread(new ThredImp1());
        r1.start();//线程不能重复启动
        r2.start();
        r3.start();//runnable
    }

}
class ThredImp1 implements Runnable{
    public String name;

    public void run(){

        System.out.println(Thread.currentThread().getName());
    }
}
class ThreadExtend extends Thread{
    public ThreadExtend(String name){
        super(name);
    }
    public ThreadExtend(){
        super();
    }
    public void run(){
        for(int i=0;i<5;i++){
            System.out.println("我是"+this.getName()+i);
        }
    }
        //runnable和thread的区别：
        //.1.；避免单继承的局限性2.便于资源共享