latihan 8.4

 public class ThisTest  
 {  
   public static void main( String[] args )  
   {  
     SimpleTime time = new SimpleTime(15,30,19);  
     System.out.println(time.buildString());  
   }  
 }  
 class SimpleTime  
 {  
   private int hour;  
   private int minute;  
   private int second;  
   public SimpleTime( int hour, int minute, int second)  
   {  
     this.hour = hour;  
     this.minute = minute;  
     this.second = second;  
   }  
   public String buildString()  
   {  
     return String.format("%24: %s\n%24s: $s",  
     "this.toUniversalString()", this.toUniversalString(),  
     "toUniversalString()", toUniversalString());  
   }  
   public String toUniversalString()  
   {  
     return String.format("%02d:%02d:%02d",  
     this.hour, this.minute, this.second);  
   }  
 }