Question

I was not sure how to update this question I posted earlier, but I need to make a code with these parameters in it. I want to try and have the code take the sun and the planets of the solar system and allow the user to pick one of the planets and print out the orbital period around the sun for that planet. I just want the code to try and meet these parameters and be able to print out the orbital period of the planets. Is this possible? If not, then can someone help me fine-tune it and create it? The code/language is Java programming

a. at least 5 variables and they cannot all be of the same type

b. enumerated data type

c. a decision structure

d. loop structure

e. data validation

f. 2 methods (1 void and 1 value returning).

Answer 1

According to your question the following program will take the Planet name as input and give the Orbital Speed of that planet as output.

The Code is as follows:

import java.util.Scanner;

enum Planet                                   //Enumerated datatype
{
   Mercury("87.97"),Venus("224.70"),Earth("365.26"),Mars("686.98"),Jupiter("4332.82"),Saturn("10755.70"),Uranus("30687.15"),Neptune("60190.03");  
   private String Orbit;

                                                 // Function Returning One value
    public String getOrbit()
    {
        return this.Orbit;
    }

                                                // Non Returning Function
    private Planet(String Orbit)
    {
        this.Orbit = Orbit;
    }
}

class Main {

   public static void main(String[] args) {
   
     String s;
     Planet[] planets = Planet.values();
   
     Scanner in = new Scanner(System.in);

     System.out.println("Enter the Planet Name:");
     s = in.nextLine();
   

     for (Planet planet : planets)   //Loop structure
       {
         String p = planet.name();
       
         if(s.equals(p))                 //Decision Structure
         {
         System.out.println("Orbital Period for " + planet.name() +
                        " is = " + planet.getOrbit() );
         }
       
       }
    }
}

In the above solution i have created an enum named as Planet, this consist of the planets name along with their orbital speed. Then, in the main program i have take the input from user, after that i have checked with the enum values for that particular planet and return the orbital speed for that planet.