/**
 * Echo class displays the given character c
 *   exactly n times
 */
public class Echo implements Runnable
{
 private char c;
 private int n;

 // Constructor
 public Echo( char c, int n ) {
   this.c = c;
   this.n = n;
 }

 // Must implement the run() method
 public void run() {
   for ( int i = 0 ; i < n ; i++ ) {
     System.out.print( c );

     // Calling yield() reliniquishes control
     //   to another runnable thread
//     Thread.yield();
   }
 }
}