线程同步 综合实战

class Info {
private String title;
private String content;
private boolean flag = true;

// flag=true:表示可以生产，但是还不能被取走
// flag=false:表示可以被取走，但是还不可以生产
public synchronized void set(String title, String content) {
// 重复进入到了set（）方法里面，发现不能够生产，所以要等待
if (flag == false) {// 还没被取走，等待
try {
super.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
this.title = title;
// try {
// Thread.sleep(500);
// } catch (InterruptedException e) {
// e.printStackTrace();
// }
this.content = content;
this.flag = false;// 已生产，修改标记为要取走
super.notify();// 唤醒其它等待线程
}

public synchronized void get() {
if (flag == true) {// 还没生产，等待
try {
super.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
// try {
// Thread.sleep(500);
// } catch (InterruptedException e) {
// e.printStackTrace();
// }
System.out.println(this.title + " " + this.content);
this.flag = true;// 已取走，修改为要生产
super.notify();
}

}

class Productor implements Runnable {
private Info info;

public Productor(Info info) {
this.info = info;
}

@Override
public void run() {
for (int x = 0; x < 150; x++) {
if (x % 2 == 0) {
this.info.set("王晶磊", "好学生一枚");
} else {
this.info.set("可爱的萌动物", "草泥马");
}
}
}
}

class Customer implements Runnable {
private Info info;

public Customer(Info info) {
this.info = info;
}

@Override
public void run() {
for (int x = 0; x < 150; x++) {
this.info.get();
}
}

}

public class SynchronizedDemo {
public static void main(String[] args) {
Info info = new Info();
new Thread(new Productor(info)).start();
new Thread(new Customer(info)).start();
}
}