Java Tutorial : Java Threads (Thread start twice)

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Java Tutorial : Java Threads (Thread start twice) 

DisplayThread.java

class DisplayThread extends Thread
{

    public static void main(String args[])
    {
        DisplayThread displayThread = new DisplayThread();

        displayThread.start();
        displayThread.start();
    }

    public void run()
    {
        System.out.println("Hello by = " + this.getName());
    }

}

Output

Hello by = Thread-0
Exception in thread "main" java.lang.IllegalThreadStateException
    at java.lang.Thread.start(Thread.java:705)
    at DisplayThread.main(DisplayThread.java:9)

Click the below link to download the code:
https://sites.google.com/site/ramj2eev1/home/javabasics/ThreadDemo_start_twice_App.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/ThreadDemo_start_twice_App

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/7d3f471503184934dd2cdb3cf35260480f18e932/BasicJava/ThreadDemo_start_twice_App/?at=master

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