需求：三个吃饭的和尚与一个做饭的和尚 三个和尚吃馒头，
当馒头吃光时， 通知做饭的和尚来蒸馒头，三个和尚去等待。
馒头做好后，通知三个和尚来吃馒头，
做饭的和尚去等待。 三个和尚吃完在做馒头
public class Test2 {
public static Listguo=new ArrayList<>();
public static voidmain(String[] args) {
HuoFu huoFu=new HuoFu("大头和尚");
ChiHuo chiHuo1=new ChiHuo("牛鼻子和尚");
ChiHuo chiHuo2=new ChiHuo("白眉和尚");
ChiHuo chiHuo3=new ChiHuo("花和尚");
huoFu.start();
chiHuo1.start();
chiHuo2.start();
chiHuo3.start();
}
}
class ManTou{
private int n;
public ManTou(int n){
this.n = n;
}
@Override
public String toString(){
return "第"+n+"个馒头";
}
}
class HuoFu extends Thread{
private Stringname;
public HuoFu(Stringname) {
this.name = name;
}
//做馒头
@Override
public void run(){
while(true) {
synchronized ("chi") {
for (int i = 0; i < 30;i++) {
ManTou mt = new ManTou(i + 1);
System.out.println(name + "做好了" + mt);
Test2.guo.add(mt);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println(name+"说：馒头都做好了，大家醒来吃吧");
"chi".notifyAll();
}
synchronized ("zheng") {
try {
System.out.println("我去睡一会");
"zheng".wait();
} catch (InterruptedExceptione) {
e.printStackTrace();
}
}
}
}
}
class ChiHuo extends Thread{
public ChiHuo(Stringname) {
this.name = name;
}
private Stringname;
//吃馒头
@Override
public void run(){
while(true) {
synchronized ("chi") {
if (Test2.guo.size() == 0){
System.out.println(name +"说：馒头还没做好，我先去睡一会");
try {
System.out.println(name+"说：我睡前可是通知了伙夫做馒头呀");
synchronized ("zheng"){
"zheng".notify();
}
"chi".wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
else {
ManTou mt = Test2.guo.remove(0);
System.out.println(name + "吃掉了" + mt);
}
}
long n =(long) (Math.random() * 5 + 1) * 1000;
try {
Thread.sleep(n);
} catch(InterruptedException e) {
e.printStackTrace();
}
}
}
}
