Basic Java threading and runnable pattern

I have a problem with understanding this code. I have only a couple of hours' knowledge of Java.

Here is the code :

// Create a new thread.
class NewThread implements Runnable {
   Thread t;
   NewThread() {
      // Create a new, second thread
      t = new Thread(this, "Demo Thread");
      System.out.println("Child thread: " + t);
      t.start(); // Start the thread
   }

   // This is the entry point for the second thread.
   public void run() {
      try {
         for(int i = 5; i > 0; i--) {
            System.out.println("Child Thread: " + i);
            // Let the thread sleep for a while.
            Thread.sleep(50);
         }
     } catch (InterruptedException e) {
         System.out.println("Child interrupted.");
     }
     System.out.println("Exiting child thread.");
   }
}

public class ThreadDemo {
   public static void main(String args[]) {
      new NewThread(); // create a new thread
      try {
         for(int i = 5; i > 0; i--) {
           System.out.println("Main Thread: " + i);
           Thread.sleep(100);
         }
      } catch (InterruptedException e) {
         System.out.println("Main thread interrupted.");
      }
      System.out.println("Main thread exiting.");
   }
}

And here is output of it :

Child thread: Thread[Demo Thread,5,main]
Main Thread: 5
Child Thread: 5
Child Thread: 4
Main Thread: 4
Child Thread: 3
Child Thread: 2
Main Thread: 3
Child Thread: 1
Exiting child thread.
Main Thread: 2
Main Thread: 1
Main thread exiting.

Here are my questions.

I want to understand the pattern the code follows. According to me,

• First of all, the Program should start to execute the main() function. So, instance of NewThread should be initialized.
• Then, I have to go into NewThread constructor and write Child thread: Thread[Demo Thread,5,main]
• After that t.start() comes and therefore Program should execute public void run() (AM I WRONG HERE ?? )

In public void run(), I think I should have gotten an output Child Thread 5, but instead I got Main Thread 5. I wonder why ??

Is there anyone to help me ?? Thanks in advance.