public class Adder
  { 
  
     public static void main(String[] args)
     {
        double        result;
        
        try 
        {
            result = add(args);
            System.out.println(args[0]+"+"+args[1]+": "+result);
         }
         catch (ArrayIndexOutOfBoundsException aioobe)
         {
            System.out.println("Too few operands.");
         }
      }
   
   
    
   
      public static double add(String[] terms) 
                                      //throws ArrayIndexOutOfBoundsException
      {
         double        left, result, right;
         String        operator;
          
         left     = 0.0;
         right    = 0.0;
          
   
         try
         {
            left = Double.parseDouble(terms[0]);
         }
         catch (NumberFormatException nfe)
         {
            left = 0.0;         
         }
         
         try 
         { 
            right = Double.parseDouble(terms[1]); 
         }
         catch (NumberFormatException nfe)
         {
            right = 0.0;         
         }
         
            
         result = right + left;
         
         return result;
      }
   }