Extending Thread Class

public class MainActivity
{
public static void main(String[] args)
{
ExtendingThreadClass obj = new ExtendingThreadClass("THREAD_A");
obj.run();

ExtendingThreadClass obj2 = new ExtendingThreadClass("THREAD_B");
obj2.run();
}
}

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public class ExtendingThreadClass extends Thread{

Thread t ; 

String threadName;

public ExtendingThreadClass(String threadName) 

{

this.threadName = threadName;

System.out.println("Creating thread obj: "+ threadName);

}

@Override

public void run() 

{

super.run();

System.out.println("Running thread: "+ threadName);

try {

for(int i = 4; i > 0 ; i-- ){

System.out.println("thread: "+ threadName +" "+  i);

Thread.sleep(50);

}

} catch (InterruptedException e) {

System.out.println("Thread: "+ threadName + " interrupted.");

e.printStackTrace();

}

System.out.println("Thread: "+ threadName +" is exiting");

}

public void start()

{

System.out.println("Starting: "+ threadName);

if(t == null){

t = new Thread(this, threadName);

t.start();

}

}

}

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