//PROGRAM 11-33
class DemoReverse { 
  public static void main(String[] args) { 
    
    StringBuffer sb = new StringBuffer("Pemrograman Java");       
    
    System.out.println("Sebelum dibalik:");
    System.out.println(sb.toString() + '\n');
    
    sb.reverse();
    
    System.out.println("Setelah dibalik:");
    System.out.println(sb.toString()); 
  } 
}