import java.io.*;

public class SwitchAssign{

   public static void main(String []args) throws IOException{
       
       String planet = "";
       
       int weight;
       double tempweight;
       
       boolean error;
       // indicates whether the seletion is correct
       int selection;
       // indicates the selection
       
       BufferedReader in = 
         new BufferedReader(new InputStreamReader(System.in));
       System.out.println("Input your weight in Earth pounds: ");
       weight = Integer.parseInt(in.readLine());
       tempweight = (double)weight;

       System.out.println();
       System.out.println("Enter a number to choose a planet:");
       System.out.println("1) Mercury");
       System.out.println("2) Venus");
       System.out.println("3) Mars");
       System.out.println("4) Saturn");
       System.out.println("5) Jupiter");
       System.out.println("6) Neptune");
       System.out.println("7) Uranus");
       System.out.println("8) Pluto");
       
       selection = Integer.parseInt(in.readLine());
       
       switch (selection){
              case 1 : tempweight *=.38;
                       planet="Mercury";
                       error = false;
                       break;
              case 2 : tempweight *=.78;
                       planet = "Venus";
                       error = false;
                       break;
              case 3 : tempweight *=.39;
                       planet="Mars";
                       error = false;
                       break;
              case 4 : tempweight *=1.17;
                       planet="Saturn";
                       error = false;
                       break;
              case 5 : tempweight *=2.65;
                       planet="Jupiter";
                       error = false;
                       break;
              case 6 : tempweight *=1.23;
                       planet="Neptune";
                       error = false;
                       break;
              case 7 : tempweight *=1.05;
                       planet="Uranus";
                       error = false;
                       break;
              case 8 : tempweight *=.05;
                       planet="Pluto";
                       error = false;
                       break;
              default : System.out.println("You did not select" + 
                                      " a planet from the list.");
                       error = true; 
              }
         // the switch statement computes the converted weight 
         // based upon the planet specified
         
         
         if(!error)
         {
         weight = (int)Math.round(tempweight);
         System.out.println("\nYou weigh " + 
                            weight + 
                            " pounds on " + 
                            planet + ".");
         }
         // prints out the final result 
         // if selection is correct
  }
}