Java1-梁笑1407094107

[android-LXZ]

1.删羊

    int n=2;
    int lengh=sheepList.size();
    for(int i=lengh-1;i>lengh-n-1;i--)
    {
        sheepList.remove(i);
    }

    Iterator it=sheepList.iterator();
    while(it.hasNext())
    {
        sheep sp=(sheep)it.next();
        if(sp.getName()=="慢羊羊")
        sheepList.remove(sp);
    }

    int p=2;
    for(int i=0;i<p;i++)
    {
        sheepList.remove(0);
    }

2、自动写文件

 for(int i=0;i<9;i++){
                file=new File(manyfile,"helloworld"+i+".txt");
                OutputStream out=null;
                try {
                    out=new FileOutputStream(file);
                    String s="我真"+i;
                    try {
                        out.write(s.getBytes());
                    } catch (IOException e) {
                // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                } catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                    e.printStackTrace();
                }
        } 

3、线程

public static void main(String[] arge){
    ThreadExtend th=new ThreadExtend("1--");
    ThreadExtend th1=new ThreadExtend("2--");
    ThreadExtend th2=new ThreadExtend("3--");
    th.start();
    th.start();
    th1.start();
    th2.start();
    Thread th3=new Thread(new ThreadImpl("1--"));
    Thread th4=new Thread(new ThreadImpl("2--"));
    Thread th5=new Thread(new ThreadImpl("3--"));
    th3.start();
    th3.start();
    th4.start();
    th5.start();
    }
}

class ThreadImpl implements Runnable{
    private String name;
    public ThreadImpl(String name){
        this.name=name;
    }
    public ThreadImpl(){

    }

public void run() {
    // TODO Auto-generated method stub
    for(int i=0;i<100;i++){
        System.out.println("i am"+this.getName()+i);
        }   
    }
private String getName() {
    // TODO Auto-generated method stub
    return name;
}

}

class ThreadExtend extends Thread{
    public ThreadExtend(String name){
        super(name);
    }
    public ThreadExtend(){
        super();
    }
    public void run() {
        // TODO Auto-generated method stub
        for(int i=0;i<100;i++){
            System.out.println("i am"+this.getName()+i);
        }
    }