使用内部类来将线程隐藏在类中的几种方法

悠悠 2022-06-16 00:15 112阅读 0赞

class InnerThread1{
        private int countDown=5;
        private Inner inner;
        private class Inner extends Thread{
            Inner(String name) {
                super(name);
                start();
            }
    
            @Override
            public void run() {
                while(true){
                    try {
                        System.out.println(this);
                        if(--countDown==0)
                            return;
                        TimeUnit.MILLISECONDS.sleep(10);
                    } catch (InterruptedException e) {
                        System.out.println("interrupted");
                    }
                }
            }
            public String toString(){
                return getName()+":"+countDown;
            }
        }
        public InnerThread1(String name){
            inner=new Inner(name);
        }
    }
    class InnerThread2{
        private int countDown=5;
        private Thread t;
        public InnerThread2(String name){
            t=new Thread(name){
                @Override
                public void run() {
                    while(true){
                        try {
                            System.out.println(this);
                            if(--countDown==0)
                                return;
                            TimeUnit.MILLISECONDS.sleep(10);
                        } catch (InterruptedException e) {
                            System.out.println("sleep() interrupted");
                        }
                    }
                }
                public String toString(){
                    return getName()+":"+countDown;
                }
            };
            t.start();
        }
    }
    class InnerRunnable1{
        private int countDown=5;
        private Inner inner;
        private class Inner implements Runnable{
            Thread t;
            Inner(String name){
                t=new Thread(this,name);
                t.start();
            }
            @Override
            public void run() {
                    try {
                        while(true) {
                            System.out.println(this);
                            if (--countDown == 0)
                                return;
                            TimeUnit.MILLISECONDS.sleep(10);
                        }
                    } catch (InterruptedException e) {
                        System.out.println("sleep() interrupted");
                    }
            }
            public String toString(){
                return t.getName()+": "+countDown;
            }
        }
        public InnerRunnable1(String name){
            inner=new Inner(name);
        }
    }
    class InnerRunnable2{
        private int countDown=5;
        private Thread t;
        public InnerRunnable2(String name){
            t=new Thread(new Runnable() {
                @Override
                public void run() {
                    while(true){
                        System.out.println(this);
                        if(--countDown==0)
                            return;
                        try {
                            TimeUnit.MILLISECONDS.sleep(10);
                        } catch (InterruptedException e) {
                            System.out.println("sleep() interrupted");
                        }
                    }
                }
                public String toString(){
                    return Thread.currentThread().getName()+": "+countDown;
                }
            },name);
        }
    }
    class ThreadMethod{
        private int countDown=5;
        private Thread t;
        private String name;
        public ThreadMethod(String name){
            this.name=name;
        }
        public void runTask(){
            if(t==null){
                t=new Thread(name){
                    @Override
                    public void run() {
                        while(true){
                            System.out.println(this);
                            if(--countDown==0)
                                return;
                            try {
                                TimeUnit.MILLISECONDS.sleep(10);
                            } catch (InterruptedException e) {
                                System.out.println("sleep() interrupted");
                            }
                        }
                    }
                    public String toString(){
                        return getName()+": "+countDown;
                    }
                };
                t.start();
            }
        }
    }
    public class ThreadVariations {
        public static void main(String[] args){
            new InnerThread1("InnerThread1");
            new InnerThread2("InnerThread2");
            new InnerRunnable1("InnerRunnable1");
            new InnerRunnable2("InnerRunnable2");
            new ThreadMethod("ThreadMethod").runTask();
        }
    }