Creating, Starting and Stopping Threads

Create

Using the Original Class

package com.guanlun.java.concurrency.thread;

public class ThreadExample {
    public static void main(String[] args){
        Thread thread = new Thread();
        thread.start();
    }
}

Inheritant from Thread Class

package com.guanlun.java.concurrency.thread;

public class ThreadExample2 {

    public static class MyThread extends Thread{
        public void run(){
            System.out.println("MyThread running");
            System.out.println("MyThread finished");
        }
    }

    public static void main(String[] args){
        MyThread myThread = new MyThread();
        myThread.start()
    }
}

Runnable Interface

Must implement the run method

package com.guanlun.java.concurrency.thread;

public class ThreadExample3 {

    public static class MyRunnable implements Runnable{
        @Override
        public void run(){
            System.out.println("MyRunnable running");
            System.out.println("MyRunnable finished");
        }
    }

    public static void main(String[] args){
        Thread thread = new Thread(new MyRunnable());
        thread.start();
    }
}

Inheritant from Runnable Class

package com.guanlun.java.concurrency.thread;

public class ThreadExample4 {

    public static class main(String[] args) {
        Runnable runnable = new Runnable(){
            @Override
            public void run(){
                System.out.println("Runnable running");
                System.out.println("Runnable finished");
            }
        };

        Thread thread = new Thread( runnable );
        thread.start();
    }
}

Implement Runnbale with Lambda Function

package com.guanlun.java.concurrency.thread;

public class ThreadExample5 {

    public static class main(String[] args) {
        Runnable runnable = () -> {
            System.out.println("Runnable running");
            System.out.println("Runnable finished");
        };

        Thread thread = new Thread( runnable );
        thread.start();
    }
}

Get and Set Thread Name

package com.guanlun.java.concurrency.thread;

public class ThreadExample6 {

    public static class main(String[] args) {
        Runnable runnable = () -> {
            String threadName = Thread.currentThread().getName();
            System.out.println(threadName + " running");
        };

        Thread thread = new Thread( runnbale, "NewThreadName");
        thread.start(); //NewThreadName
        Thread thread2 = new Thread( runnbale, "NewThreadName2");
        thread.start(); //NewThreadName2
    }
}

Join/Wait a Thread

Wait for the Java Thread to terminate

package com.guanlun.java.concurrency.thread;

public class ThreadExample7 {

    public static class main(String[] args) {
        Runnable runnable = () -> {
            for (int i=0; i<5; i++){
                sleep(1000);
                System.out.println("Running")
            }
        };


        Thread thread = new Thread(runnbale);
        thread.setDaemon(true); 
        //the Daemon thread's life depends on the user thread
        //when the main thread is finished, then Daemon thread is also terminated.
        thread.start();
        //if here is the end of the main program, then there is nothing happen, because the thread is a Daemon thread, and the main is already finished. 

        try {
            thread.join(); 
            //the main thread will be blocked(Waiting Here) until the thread is terminated.
        } catch (InterruptedException e) {
            e.printStackTrace()
        }
    }
}