- class Res
- {
- String name;
- String sex;
- boolean flag = false;
- }
- class Input implements Runnable
- {
- private Res r ;
- Input(Res r)
- {
- this.r = r;
- }
- public void run()
- {
- int x = 0;
- while(true)
- {
- synchronized(r)
- {
- if(r.flag)
- try{r.wait();}catch(Exception e){}
- if(x==0)
- {
- r.name="mike";
- r.sex="man";
- }
- else
- {
- r.name="丽丽";
- r.sex = "女女女女女";
- }
- x = (x+1)%2;
- r.flag = true;
- r.notify();
- }
- }
- }
- }
- class Output implements Runnable
- {
- private Res r ;
-
- Output(Res r)
- {
- this.r = r;
- }
- public void run()
- {
- while(true)
- {
- synchronized(r)
- {
- if(!r.flag)
- try{r.wait();}catch(Exception e){}
- System.out.println(r.name+"...."+r.sex);
- r.flag = false;
- r.notify();
- }
- }
- }
- }
- class InputOutputDemo
- {
- public static void main(String[] args)
- {
- Res r = new Res();
- Input in = new Input(r);
- Output out = new Output(r);
- Thread t1 = new Thread(in);
- Thread t2 = new Thread(out);
- t1.start();
- t2.start();
- }
- }
复制代码 我没看懂的是两个实现Runnable接口的类中run()前面的代码是干什么用的,只知道毕老师说这样保证的是Res对象的唯一性,为什么?
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