编写生产者/消费者模式的程序

importjava.util.*;

public classMyNumber {

privateListnum=newArrayList();

public static voidmain(String args[]) {

MyNumber m =newMyNumber();

newThread(newConsumer(m.getNum()),"消费者").start();

newThread(newProducer(m.getNum()),"生产者").start();

}

publicList getNum() {

returnnum;

}

}

classConsumerimplementsRunnable {

privateListnum=null;

private intcount=0;

publicConsumer(List list) {

this.num= list;

}

@Override

public voidrun() {

//TODO 自动生成的方法存根while(count<100) {

synchronized(num) {

String name = Thread.currentThread().getName();

if(num.size() ==0) {

try{

num.wait();

}catch(InterruptedException e) {

e.printStackTrace();

}

}else{

if(num.size() >0) {

num.remove(0);

num.notifyAll();

count++;

//System.out.println(name + "取出了数字" + num.get(0) + "!!!");System.out.println("现在还剩"+num.size() +"数字！");

}

}

}

}

}

}

classProducerimplementsRunnable {

privateListnum=null;

private intcount=0;

publicProducer(List list) {

this.num= list;

}

@Override

public voidrun() {

//TODO 自动生成的方法存根while(count<100) {

synchronized(num) {

String name = Thread.currentThread().getName();

if(num.size() >5) {

try{

num.wait();

}catch(InterruptedException e) {

e.printStackTrace();

}

}else{

String num1 =getNum();

num.add(num1);

num.notifyAll();

try{

Thread.sleep(100);

}catch(InterruptedException e) {

//TODO 自动生成的 catch 块e.printStackTrace();

}

count++;

System.out.println(name +"添加了一个数字！");

System.out.println("现在还有"+num.size() +"数字！");

}

}

}

}

private staticString getNum() {

String st;

Random ra =newRandom();

inta = ra.nextInt(9);

st = String.valueOf(a);

returnst;

}

}