Question

Using the JOptionPane class for both input and output How could I code this?

*Calculate Inches to Centimeters, Meters, Feet, Yards, and Kilometers

*Calculate Feet to Meters, Yards, Kilometers, and Miles

Answer 1

Here is the answer for your question in Java Programming Language.

NOTE : IDE Used - Netbeans 8.0

CODE :

package java_examples; import java.io.*; import java.util.*; import javax.swing.*; import java.text.DecimalFormat; public class Calculations { static DecimalFormat form = new DecimalFormat("##.######"); public static void main(String[] args) { String choice = ""; //Loop repeats until user says No - "N" while(!"N".equals(choice)) { //Displaying user greeting System.out.println("\nMenu\n 1.Inches to Centimeters,Meters,Feet,Yards and Kilometers\n 2.Feet to Meters,Yard, Kilometers and Miles"); int option = 0; //Reading user input Scanner s = new Scanner(System.in); System.out.println("\nEnter your choice : "); option = s.nextInt(); //Switch case for calculateInches and calculateFeet switch(option) { case 1: calculateInches(); break; case 2: calculateFeet(); break; default : System.out.println("Invalid Option"); break; } //Askig user choice t continue the rogram System.out.println("Do you want to continue[Y/N]?"); choice = s.next(); } } //Calculating Inches to Centimeters,Meters,Feet,Yards and Kilometers static void calculateInches() { //Reading input for Option Pane String inches = ""; inches = JOptionPane.showInputDialog("Enter Inches :"); double inch = Double.valueOf(inches); //Converting them to required measurements double centimeters = inch*(2.54); double meters = inch*(0.0254); double feet = inch*(0.0833333); double yards = inch*(0.0277778); double kilometers = inch*(0.000254); //Creating resultnt string String result = inches + " inches are equal to : \n\nCentimeters : " + Double.toString(centimeters) + "\n\nMeters : " + Double.toString(meters) + "\n\nFeet : " + Double.toString(feet) + "\n\nYards : " + Double.toString(yards) + "\n\nKilometers : " + Double.toString(kilometers) + "\n"; //Displaying it in Message Box JOptionPane.showMessageDialog(null, result); } //Calculating Feet to Meters,Yard, Kilometers and Miles static void calculateFeet() { //Reading input for Option Pane String feet = ""; feet = JOptionPane.showInputDialog("Enter feet :"); double foot = Double.valueOf(feet); //Converting them to required measurements double meters = foot*(0.3048); double kilometers = foot*(0.0003048); double yards = foot*(0.333333); double miles = foot*(0.000189394); //Creating resultnt string String result = feet + " feet are equal to : \n\nMeters : " + Double.toString(meters) + "\n\nYard : " + Double.toString(yards) + "\n\nKilometers : " + Double.toString(kilometers) + "\n\nMiles : " + Double.toString(miles)+"\n"; //Displaying it in Message Box JOptionPane.showMessageDialog(null, result); } }

SCREENSHOTS :

Please see the screenshots of the code for indentations of the code.

OUTPUT :

Any doubts regarding this can be explained with pleasure :)