[JAVA 多線程] 生產者消費者執行個體

標籤：

正好有人問，就直接將代碼記錄下來。

 

背景：有一個倉庫儲存貨物，存在著生產者和消費者，設計一個可以並發的實現。

設計思路：設計一個倉庫類，類中儲存最大的容量限制和當前的count，類中包含生產和消費的方法，並且都是synchronized。

具體代碼：

package com.test.tiny;public class Store {    private final int MAX_SIZE; //最大    private int count; // 當前        public Store(int n) {        MAX_SIZE = n;        count = 0;    }        public synchronized void add() {        while(count >= MAX_SIZE) {            System.out.println("已經滿了");            try {                this.wait();            } catch (InterruptedException e) {                e.printStackTrace();            }        }        count++;        System.out.println(Thread.currentThread().toString() + " put :" + count);        this.notifyAll();    }        public synchronized void remove() {        while(count <= 0) {            System.out.println("已經空了");            try {                this.wait();            }catch(Exception e) {                e.printStackTrace();            }        }                System.out.println(Thread.currentThread().toString() + " get :" + count);        count--;        this.notifyAll();    }        public static void main(String[] args) {        // TODO Auto-generated method stub        Store s = new Store(5);        Thread pro = new Producer(s);        Thread con = new Consumer(s);        Thread pro2 = new Producer(s);        Thread con2 = new Consumer(s);                pro.setName("生產者1");        con.setName("消費者1");        pro2.setName("生產者2");        con2.setName("消費者2");                pro.start();        con.start();        pro2.start();        con2.start();    }}class Producer extends Thread {    private Store s;    public Producer(Store s) {        this.s = s;    }    public void run() {        while(true) {            s.add();            try {                Thread.sleep(1000);  // 為了直觀，休息1秒            }catch(Exception e) {                e.printStackTrace();            }        }    }}class Consumer extends Thread {    private Store s;        public Consumer(Store s) {        this.s = s;    }        public void run() {        while(true) {            s.remove();            try {                Thread.sleep(1500); // 為了直觀 多休息0.5秒            } catch (InterruptedException e) {                e.printStackTrace();            }        }    }}

 

[JAVA 多線程] 生產者消費者執行個體