Assignemnt #38 and Space Boxing

Code

    
    ///Name: Nick Cerdan
    ///Period: 6
    ///Program Name: Space Boxing
    ///File Name: SpaceBoxing.java
    ///Date Finished: 9/28/15 
    
    import java.util.Scanner;
    
    public class SpaceBoxing
    {
        public static void main (String[] args)
        {
            Scanner keyboard = new Scanner (System.in);
            
            double weight, sweight;
            int planetName;
            
            System.out.print("Please enter your current earth weight: ");
            weight = keyboard.nextDouble();
            
            System.out.println(" ");
            System.out.println("I have information for the following planets:");
            System.out.println("     1. Venus    2. Mars    3. Jupiter   ");
            System.out.println("     4. Saturn   5. Uranus  6. Neptune  ");
            System.out.println(" ");
            
            
            System.out.print("Which planet are you visiting? ");
            planetName = keyboard.nextInt();
            
            if (planetName == 1)
            {
                sweight = weight*0.78;
            }
            else if (planetName == 2 )
            {
                sweight = weight*0.39;
            }
            else if (planetName == 3 )
            {
                sweight = weight*2.65;
            }
            else if (planetName == 4 )
            {
                sweight = weight*1.17;
            }
            else if (planetName == 5 )
            {
                sweight = weight*1.05;
            }
            else
            {
                sweight = weight*1.23;
            }
            
            System.out.println(" ");
            System.out.println("Your weight would be " + sweight + " pounds on that planet");
        }
    }