java ——守护线程问题 - 黑马程序员技术交流社区

<FONT color=red size=5>//在生产者，消费者的基础上加了守护线程，但是当mian 方法结束后守护线程还要执行一段时间才能停止。
</FONT>//定义共享类
class Share {
private int sum = 0;
private String name;
boolean boolea = false;
// 创建锁。
Lock lock = new ReentrantLock();
Condition conditio = lock.newCondition();
Condition conditio1 = lock.newCondition();
// 定义生产方法
public void Shengchan() throws InterruptedException {
lock.lock();
try {
while (boolea)
conditio.await();
this.name = "商品" + sum++;
System.out.println(Thread.currentThread().getName()
+ "生产者..............." + name);
boolea = true;
conditio1.signal();
} finally {
lock.unlock();
}
}
// 定义消费方法
public void Xiaofei() throws InterruptedException {
lock.lock();
try {
while (!boolea)
conditio1.await();
System.out.println(Thread.currentThread().getName() + "消费者......"
+ this.name);
boolea = false;
conditio.signal();
/*
* if ("商品100".equals(this.name)) System.exit(0);
*/
} finally {
lock.unlock();
}
}
}
// 定义生产线程
class Shengchan implements Runnable {
Share are;
Shengchan(Share are) {
this.are = are;
}
boolean lean = true;
//覆写run 方法
public void run() {
while (lean)
try {
are.Shengchan();
} catch (InterruptedException e) {
//System.out.println("我是异常偶1");
//lean = false;
}
}
}
class Xiaofei implements Runnable {
Share are;
Xiaofei(Share are) {
this.are = are;
}
boolean lean = true;
//覆写run 方法
public void run() {
while (lean)
try {
are.Xiaofei();
} catch (InterruptedException e) {
//System.out.println("我是异常偶2");
//lean = false;
}
}
}
class Synch2 {
public static void main(String[] args) {
//创建共享类对象
Share are = new Share();
//创建生产对象，传入共享对象
Shengchan chan = new Shengchan(are);
//创建消费对象，传入共享对象
Xiaofei xiao = new Xiaofei(are);
//创建线程
Thread t1 = new Thread(chan);
Thread t2 = new Thread(chan);
Thread t3 = new Thread(xiao);
Thread t4 = new Thread(xiao);
//声明是守护线程
t1.setDaemon(true);
t2.setDaemon(true);
t3.setDaemon(true);
t4.setDaemon(true);
//启动线程
t1.start();
t2.start();
t3.start();
t4.start();
int i = 0;
//main 方法結束
while (true) {
if (i == 100) {
break;
}
i++;
System.out.println(Thread.currentThread().getName()
+ ".....我是main......." + i);
}
}
}

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Thread-0生产者...............商品0
main.....我是main.......1
main.....我是main.......2
main.....我是main.......3
main.....我是main.......4
main.....我是main.......5
main.....我是main.......6
main.....我是main.......7
main.....我是main.......8
main.....我是main.......9
main.....我是main.......10
main.....我是main.......11
main.....我是main.......12
main.....我是main.......13
main.....我是main.......14
main.....我是main.......15
main.....我是main.......16
main.....我是main.......17
main.....我是main.......18
main.....我是main.......19
main.....我是main.......20
main.....我是main.......21
main.....我是main.......22
main.....我是main.......23
main.....我是main.......24
main.....我是main.......25
main.....我是main.......26
main.....我是main.......27
main.....我是main.......28
main.....我是main.......29
main.....我是main.......30
main.....我是main.......31
main.....我是main.......32
main.....我是main.......33
main.....我是main.......34
main.....我是main.......35
main.....我是main.......36
main.....我是main.......37
main.....我是main.......38
main.....我是main.......39
main.....我是main.......40
main.....我是main.......41
main.....我是main.......42
main.....我是main.......43
main.....我是main.......44
main.....我是main.......45
main.....我是main.......46
main.....我是main.......47
main.....我是main.......48
main.....我是main.......49
main.....我是main.......50
main.....我是main.......51
main.....我是main.......52
main.....我是main.......53
main.....我是main.......54
main.....我是main.......55
main.....我是main.......56
main.....我是main.......57
main.....我是main.......58
main.....我是main.......59
main.....我是main.......60
main.....我是main.......61
main.....我是main.......62
main.....我是main.......63
main.....我是main.......64
main.....我是main.......65
main.....我是main.......66
main.....我是main.......67
main.....我是main.......68
main.....我是main.......69
main.....我是main.......70
main.....我是main.......71
main.....我是main.......72
main.....我是main.......73
main.....我是main.......74
main.....我是main.......75
main.....我是main.......76
main.....我是main.......77
main.....我是main.......78
main.....我是main.......79
main.....我是main.......80
main.....我是main.......81
main.....我是main.......82
main.....我是main.......83
main.....我是main.......84
main.....我是main.......85
main.....我是main.......86
main.....我是main.......87
main.....我是main.......88
main.....我是main.......89
main.....我是main.......90
main.....我是main.......91
main.....我是main.......92
main.....我是main.......93
main.....我是main.......94
main.....我是main.......95
main.....我是main.......96
main.....我是main.......97
main.....我是main.......98
main.....我是main.......99
main.....我是main.......100

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