java 22 - 16 多线程之生产者和消费者的问题

1 public class Student {
2     
3         String name;
4         int age;
5 }

public class SetThread implements Runnable {
    private int x = 0;

    // 因为SetThread和Getthread两个类使用的都是同一个资源
    // 所以，在创建一个资源对象，再通过构造方法传递给其它的类
    private Student s;

    public SetThread(Student s) {
        this.s = s;
    }

    public void run() {
        // 录入信息（生产者）

        while (true) {

            // 加锁，且SetThread和Getthread两个类使用的是同一把锁，所以锁的对象是资源对象s
            synchronized (s) {
                if (x % 2 == 0) {
                    s.name = "张三";
                    s.age = 23;
                } else {
                    s.name = "李四";
                    s.age = 24;
                }
                x++;
            }
        }
    }

}

 1 public class GetThread implements Runnable {
 2 
 3     private Student s;
 4     public GetThread(Student s){
 5         this.s = s;
 6     }
 7     public void run() {
 8             //获取信息  消费者
 9             //锁的对象，同SetThread
10         while(true){
11             synchronized (s){
12                 System.out.println(s.name +"--" + s.age);
13             }
14         }
15 
16     }
17 
18 }    

 1 public class StudentDemo {
 2 
 3 
 4     public static void main(String[] args) {
 5         
 6         //创建资源对象
 7         Student s = new Student();
 8         
 9         //创建录入和获取类的对象
10         SetThread st = new SetThread(s);
11         GetThread gt = new GetThread(s);
12         
13         //创建线程对象
14         Thread t1 = new Thread(st);
15         Thread t2 = new Thread(gt);
16         
17         //启动线程
18         t1.start();
19         t2.start();
20 
21     }
22 
23 }