extendthread.java

Mcgraw-Hill - Java 2 - A Beginner S Guide, 2Nd Ed - 2003 -prog.

/*  
   Project 11-1 
 
   Extend Thread. 
*/ 
class MyThread extends Thread { 
  int count; 
 
  // Construct a new thread. 
  MyThread(String name) { 
    super(name); // name thread 
    count = 0; 
    start(); // start the thread 
  } 
 
  // Begin execution of new thread. 
  public void run() { 
    System.out.println(getName() + " starting."); 
    try {  
      do { 
        Thread.sleep(500); 
        System.out.println("In " + getName() + 
                           ", count is " + count); 
        count++; 
      } while(count < 10); 
    } 
    catch(InterruptedException exc) { 
      System.out.println(getName() + " interrupted."); 
    } 
    System.out.println(getName() + " terminating."); 
  } 
} 
 
class ExtendThread { 
  public static void main(String args[]) { 
    System.out.println("Main thread starting."); 
 
    MyThread mt = new MyThread("Child #1"); 
 
    do { 
      System.out.print("."); 
      try { 
        Thread.sleep(100); 
      } 
      catch(InterruptedException exc) { 
        System.out.println("Main thread interrupted."); 
      } 
    } while (mt.count != 10); 
 
    System.out.println("Main thread ending."); 
  } 
}