Interrupting a thread

Main.java

// Interrupting a thread

import java.util.concurrent.TimeUnit;

public class Main {

   public static void main(String[] args) {

      // Launch the prime numbers generator
      Thread task = new PrimeGenerator();
      task.start();

      // Wait 5 seconds
      try {
         TimeUnit.SECONDS.sleep(5);
      } catch (InterruptedException e) {
         e.printStackTrace();
      }

      // Interrupt the prime number generator
      task.interrupt();

      // Write information about the status of the Thread
      System.out.printf("Main: Status of the Thread: %s\n", task.getState());
      System.out.printf("Main: isInterrupted: %s\n", task.isInterrupted());
      System.out.printf("Main: isAlive: %s\n", task.isAlive());
   }
}

PrimeGenerator.java

public class PrimeGenerator extends Thread {

   @Override
   public void run() {
      long number = 1L;

      // This bucle never ends... until is interrupted
      while (true) {
         if (isPrime(number)) {
            System.out.printf("Number %d is Prime\n", number);
         }

         // When is interrupted, write a message and ends
         if (isInterrupted()) {
            System.out.printf("The Prime Generator has been Interrupted\n");
            return;
         }
         number++;
      }
   }

   private boolean isPrime(long number) {
      if (number <= 2) {
         return true;
      }
      for (long i = 2; i < number; i++) {
         if ((number % i) == 0) {
            return false;
         }
      }
      return true;
   }
}