Java 生产者和消费者问题

运行结果：

code:

class Info {
private String name = "Carter";
private int age = 25;
public String getName() {
return name;
}


public void setName(String name) {
this.name = name;
}


public int getAge() {
return age;
}


public void setAge(int age) {
this.age = age;
}
}


class Producer implements Runnable {
private Info info = null;
Producer(Info info) {
this.info = info;
}


public void run() {
boolean flag = false;
int i;
for(i=1;i<30;i++) {
if (flag) {
this.info.setName("Carter");
try {
Thread.sleep(100);
} catch(Exception e) {
e.printStackTrace();
}
this.info.setAge(25);
flag = false;
} else {
this.info.setName("Steven");
try {
Thread.sleep(100);
} catch(Exception e) {
e.printStackTrace();
}
this.info.setAge(100);
flag = true;
}
}
}
}


class Consumer implements Runnable {
private Info info = null;
public Consumer(Info info) {
this.info = info;
}


public void run() {
int i;
for(i=1; i<25;i++) {
try {
Thread.sleep(100);
} catch(Exception e) {
e.printStackTrace();
}
System.out.println(this.info.getName() + " <======> " + this.info.getAge());
}
}
}


public class ThreadTest {
public static void main(String[] args) {
Info info = new Info();
Producer pro = new Producer(info);
Consumer con = new Consumer(info);
new Thread(pro).start();
new Thread(con).start();
}
}

等待和唤醒的操作:

code:

class Info {
private String name = "Carter";
private int age = 25;
private boolean flag=false;
public String getName() {
return name;
}


public void setName(String name) {
this.name = name;
}


public int getAge() {
return age;
}


public void setAge(int age) {
this.age = age;
}


public synchronized void set(String name, int age) {
if (!flag) {
try {
super.wait();
} catch (Exception e) {
e.printStackTrace();
}
}
this.name = name;
try {
Thread.sleep(100);
} catch (Exception e) {
e.printStackTrace();
}
this.age = age;
flag = false;
super.notify();
}
public synchronized void get() {
if (flag) {
try {
super.wait();
} catch (Exception e) {
e.printStackTrace();
}
}
try {
Thread.sleep(100);
} catch (Exception e) {
e.printStackTrace();
}
System.out.println(this.getName() + " <===================>" + this.getAge());
flag = true;
super.notify();
}
}


class Producer implements Runnable {
private Info info = null;
Producer(Info info) {
this.info = info;
}


public void run() {
boolean flag = false;
int i;
for(i=1;i<25;i++) {
if (flag) {
this.info.set("Carter", 20);
flag = false;
} else {
this.info.set("Steven",100);
flag = true;
}
}
}
}


class Consumer implements Runnable {
private Info info = null;
public Consumer(Info info) {
this.info = info;
}


public void run() {
int i;
for(i=1; i<25;i++) {
try {
Thread.sleep(100);
} catch(Exception e) {
e.printStackTrace();
}
this.info.get();
}
}
}


public class ThreadTest {
public static void main(String[] args) {
Info info = new Info();
Producer pro = new Producer(info);
Consumer con = new Consumer(info);
new Thread(pro).start();
new Thread(con).start();
}
}