public class PrintThread implements Runnable
1: // Fig. 23.4: PrintThread.java
2: // PrintThread class sleeps for a random time from 0 to 5 seconds
3: import java.util.Random;
4:
5: public class PrintThread implements Runnable
6: {
7: private int sleepTime; // random sleep time for thread
8: private String threadName; // name of thread
9: private static Random generator = new Random();
10:
11: // assign name to thread
12: public PrintThread( String name )
13: {
14: threadName = name; // set name of thread
15:
16: // pick random sleep time between 0 and 5 seconds
17: sleepTime = generator.nextInt( 5000 );
18: } // end PrintThread constructor
19:
20: // method run is the code to be executed by new thread
21: public void run()
22: {
23: try // put thread to sleep for sleepTime amount of time
24: {
25: System.out.printf( "%s going to sleep for %d milliseconds.\n",
26: threadName, sleepTime );
27:
28: Thread.sleep( sleepTime ); // put thread to sleep
29: } // end try
30: // if thread interrupted while sleeping, print stack trace
31: catch ( InterruptedException exception )
32: {
33: exception.printStackTrace();
34: } // end catch
35:
36: // print thread name
37: System.out.printf( "%s done sleeping\n", threadName );
38: } // end method run
39: } // end class PrintThread
40:
41: /**************************************************************************
42: * (C) Copyright 1992-2005 by Deitel & Associates, Inc. and *
43: * Pearson Education, Inc. All Rights Reserved. *
44: * *
45: * DISCLAIMER: The authors and publisher of this book have used their *
46: * best efforts in preparing the book. These efforts include the *
47: * development, research, and testing of the theories and programs *
48: * to determine their effectiveness. The authors and publisher make *
49: * no warranty of any kind, expressed or implied, with regard to these *
50: * programs or to the documentation contained in these books. The authors *
51: * and publisher shall not be liable in any event for incidental or *
52: * consequential damages in connection with, or arising out of, the *
53: * furnishing, performance, or use of these programs. *
54: *************************************************************************/