Name: bsC130419 Date: 07/24/2001


Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1-b24)
Java HotSpot(TM) Client VM (build 1.3.1-b24, mixed mode)

Have a look at the JavaDoc for the java.lang.Thread default constructor. The
Java example is absolute nonsense, here it is with my comments:

class plain01 implements Runnable {
         String name;
         plain01() {
             name = null; // NOT NEEDED
         }
         plain01(String s) {
             name = s;
         }
         public void run() {
             if (name == null)
                 // THIS LINE BELOW IS NOT TRUE - NO THREAD HAS BEEN CREATED
                 // ANY OBJECT COULD CALL new plain01().run()
                 System.out.println("A new thread created");
             else
                 // AND AGAIN, NO THREAD HAS BEEN CREATED, JUST A plain01
                 System.out.println("A new thread with name " + name +
                                    " created");
         }
     }
     class threadtest01 {
         public static void main(String args[] ) {
             int failed = 0 ;

             Thread t1 = new Thread();
             if (t1 != null) // t1 CANNOT BE NULL AT THIS POINT
                 System.out.println("new Thread() succeed");
             else {
                 System.out.println("new Thread() failed");
                 failed++;
             }
         }
     }

THe ThreadTest01 class does not use plain01 - I'm guessing the intention. But
the javadoc states: "Threads created this way [no arg constructor] must have
overridden their run() method to actually do anything". The above example
doesn't do that at all.
(Review ID: 127945)
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