- class Res{
- private String name;
- private String sex;
- private boolean flag = false;
-
- public synchronized void set(String name,String sex){
- if(flag)
- try{this.wait();}catch(Exception e){}
- this.name = name;
- this.sex = sex;
- flag = true;
- this.notify();
- }
- public synchronized void out(){
- if(!flag)
- try{this.wait();}catch(Exception e){}
- System.out.println(name+"##"+sex);
- flag = false;
- this.notify();
- }
- }
- class Input implements Runnable{
- private Res r;
- Input(Res r){
- this.r = r;
- }
- public void run(){
- int x = 0;
- while(true){
- if(x==0)
- r.set("li", "man");
- else
- r.set("wang", "woman");
- x = (x+1)%2;
-
- }
- }
- }
- class Output implements Runnable{
- private Res r;
- Output(Res r){
- this.r = r;
- }
- public void run() {
- while(true){
- r.out();
- }
- }
- }
- class InputOut{
- public static void main(String[] args){
- Res r = new Res();
- new Thread(new Input(r)).start();
- new Thread(new Output(r)).start();
- }
- }
复制代码 if(flag) try{this.wait();}catch(Exception e){}
为什么第8行和第16行需要处理异常?
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