<span style="font-size:18px;"><span style="font-size:18px;">package com.ft.com.nextxteam.test;
import java.util.LinkedList;
/**
* 使用wait/notify處理消費者問題
* Created by drjr on 16-9-19.
*/
public class TestProductConm {
public static class Storage {
// 倉庫最大存儲量
private final int MAX_SIZE = 100;
// 倉庫存儲的載體
private LinkedList<Object> list = new LinkedList<Object>();
// 生產num個產品
public void produce(int num) {
// 同步代碼段
synchronized (list) {
// 如果倉庫剩余容量不足
while (list.size() + num > MAX_SIZE) {
System.out.println("要生產的產品數量:" + num + "/t庫存量:"
+ list.size() + "/t暫時不能執行生產任務!");
try {
// 由於條件不滿足，生產阻塞
list.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
// 生產條件滿足情況下，生產num個產品
for (int i = 1; i <= num; ++i) {
list.add(new Object());
}
System.out.println("已經生產產品數:" + num + "/t現倉儲量為:" + list.size());
list.notifyAll();
}
}
// 消費num個產品
public void consume(int num) {
// 同步代碼段
synchronized (list) {
// 如果倉庫存儲量不足
while (list.size() < num) {
System.out.println("要消費的產品數量:" + num + "/t庫存量:"
+ list.size() + "/t暫時不能執行生產任務!");
try {
// 由於條件不滿足，消費阻塞
list.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
// 消費條件滿足情況下，消費num個產品
for (int i = 1; i <= num; ++i) {
list.remove();
}
System.out.println("已經消費產品數:" + num + "/t現倉儲量為:" + list.size());
list.notifyAll();
}
}
// get/set方法
public LinkedList<Object> getList() {
return list;
}
public void setList(LinkedList<Object> list) {
this.list = list;
}
public int getMAX_SIZE() {
return MAX_SIZE;
}
}
public static class Producer extends Thread {
// 每次生產的產品數量
private int num;
// 所在放置的倉庫
private Storage storage;
// 構造函數，設置倉庫
public Producer(Storage storage) {
this.storage = storage;
}
// 線程run函數
public void run() {
produce(num);
}
// 調用倉庫Storage的生產函數
public void produce(int num) {
storage.produce(num);
}
// get/set方法
public int getNum() {
return num;
}
public void setNum(int num) {
this.num = num;
}
public Storage getStorage() {
return storage;
}
public void setStorage(Storage storage) {
this.storage = storage;
}
}
public static class Consumer extends Thread {
// 每次消費的產品數量
private int num;
// 所在放置的倉庫
private Storage storage;
// 構造函數，設置倉庫
public Consumer(Storage storage) {
this.storage = storage;
}
// 線程run函數
public void run() {
consume(num);
}
// 調用倉庫Storage的生產函數
public void consume(int num) {
storage.consume(num);
}
// get/set方法
public int getNum() {
return num;
}
public void setNum(int num) {
this.num = num;
}
public Storage getStorage() {
return storage;
}
public void setStorage(Storage storage) {
this.storage = storage;
}
}
public static void main(String[] args) {
// 倉庫對象
Storage storage = new Storage();
// 生產者對象
Producer p1 = new Producer(storage);
Producer p2 = new Producer(storage);
Producer p3 = new Producer(storage);
Producer p4 = new Producer(storage);
Producer p5 = new Producer(storage);
Producer p6 = new Producer(storage);
Producer p7 = new Producer(storage);
// 消費者對象
Consumer c1 = new Consumer(storage);
Consumer c2 = new Consumer(storage);
Consumer c3 = new Consumer(storage);
// 設置生產者產品生產數量
p1.setNum(10);
p2.setNum(10);
p3.setNum(10);
p4.setNum(10);
p5.setNum(10);
p6.setNum(10);
p7.setNum(80);
// 設置消費者產品消費數量
c1.setNum(50);
c2.setNum(20);
c3.setNum(30);
// 線程開始執行
c1.start();
c2.start();
c3.start();
p1.start();
p2.start();
p3.start();
p4.start();
p5.start();
p6.start();
p7.start();
}
}</span></span>