代码优化

package comm;

class Res {
    String name;
    String sex;
    boolean flag = false;

    public synchronized void set(String name, String sex) {
        if (flag)
            try {
                this.wait();
            } catch (InterruptedException e) {
            }
        this.name = name;
        this.sex = sex;
        flag = true;
        this.notify();
    }

    public synchronized void out() {
        if (!flag)
            try {
                this.wait();
            } catch (InterruptedException e) {
            }
        System.out.println(name + " , " + sex);
        flag = false;
        this.notify();
    }
}

class Input implements Runnable {
    private Res r;

    public Input(Res r) {
        this.r = r;
    }

    public void run() {
        int x = 0;
        while (true) {
            if (x == 0)
                r.set("mike", "man");
            else
                r.set("丽丽", "女女女");
            x = (x + 1) % 2;
        }
    }
}

class Output implements Runnable {
    private Res r;

    public Output(Res r) {
        this.r = r;
    }

    public void run() {
        while (true)
            r.out();
    }
}

public class InputOutoutDemo2 {

    public static void main(String[] args) {

        Res r = new Res();
        new Thread(new Input(r)).start();
        new Thread(new Output(r)).start();
    }
}