// Fig. 23.4: PrintTask.java
// PrintTask class sleeps for a random time from 0 to 5 seconds
import java.util.Random;

public class PrintTask implements Runnable 
{
   private final int sleepTime; // random sleep time for thread
   private final String taskName; // name of task
   private final static Random generator = new Random();
    
   public PrintTask( String name )
   {
      taskName = name; // set task name
        
      // pick random sleep time between 0 and 5 seconds
      sleepTime = generator.nextInt( 5000 ); // milliseconds
   } // end PrintTask constructor

   // method run contains the code that a thread will execute
   public void run()
   {
      try // put thread to sleep for sleepTime amount of time 
      {
         System.out.printf( "%s going to sleep for %d milliseconds.\n", 
            taskName, sleepTime );
         Thread.sleep( sleepTime ); // put thread to sleep
      } // end try        
      catch ( InterruptedException exception )
      {
         System.out.printf( "%s %s\n", taskName,
            "terminated prematurely due to interruption" );
      } // end catch
        
      // print task name
      System.out.printf( "%s done sleeping\n", taskName ); 
   } // end method run
} // end class PrintTask


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