// Fig. 23.5: RunnableTester.java
// Multiple threads printing at different intervals.
import java.util.concurrent.Executors;
import java.util.concurrent.ExecutorService;

public class RunnableTester 
{
   public static void main( String[] args )
   {
      // create and name each runnable
      PrintTask task1 = new PrintTask( "thread1" );
      PrintTask task2 = new PrintTask( "thread2" );
      PrintTask task3 = new PrintTask( "thread3" );
        
      System.out.println( "Starting threads" );

      // create ExecutorService to manage threads
      ExecutorService threadExecutor = Executors.newCachedThreadPool();

      // start threads and place in runnable state
      threadExecutor.execute( task1 ); // start task1
      threadExecutor.execute( task2 ); // start task2
      threadExecutor.execute( task3 ); // start task3

      threadExecutor.shutdown(); // shutdown worker threads
        
      System.out.println( "Threads started, main ends\n" );
   } // end main
} // end class RunnableTester


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