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Thread: GUI program won't take 'char' input code, can't seem to find the correct one...

  1. #1
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    Question GUI program won't take 'char' input code, can't seem to find the correct one...

    Hello. I have a program that takes a letter of the alphabet and translates it to a number on a telephone key pad. Everything is correct and prints out great in the console, but I need to do a GUI version of it, and I'm having massive trouble trying to figure out what the code is for the char user input.
    I've tried to put in things like

    userLetter = Parse.charParse (
            JOptionPane.showInputDialog("Please enter letter...");

    but it's not working, and I have no other clue what it could be. The console version is below, I just need help with what I need to change the
    "char userLetter =(QWERTY.next()).charAt(0);" to in order to get a GUI input box version. I know how to change the rest. Thanks in advance!

    import java.util.Scanner;
    import javax.swing.JOptionPane;
    public class Letter {
     
    	/**
    	 * @param args
    	 */
    	public static void main(String[] args) {
    		Scanner QWERTY = new Scanner(System.in);
    		System.out.println("Enter a letter of the alphabet to see what number it corresponds to.");
     
     
    		char userLetter =(QWERTY.next()).charAt(0);
     
    		char letter = 0;
    		letter = (char) Character.toUpperCase(userLetter);
     
    		int Digit = 0;
     
    			if (letter == 'A' || letter == 'B' || letter == 'C') {
    			Digit = 2;
    			}
     
    			else if (letter == 'D' || letter == 'E' || letter == 'F') {
    				Digit = 3;
    			}
     
    			else if (letter == 'G' || letter == 'H' || letter == 'I') {
    				Digit = 4;
    			}
     
    			else if (letter == 'J' || letter == 'K' || letter == 'L') {
    				Digit = 5;
    			}
     
    			else if (letter == 'M' || letter == 'N' || letter == 'O') {
    				Digit = 6;
    			}
     
    			else if (letter == 'P' || letter == 'Q' || letter == 'R' || letter == 'S') {
    				Digit = 7;
    			}
     
    			else if (letter == 'T' || letter == 'U' || letter == 'V') {
    				Digit = 8;
    			}
     
    			else if (letter == 'W' || letter == 'X' || letter == 'Y' || letter == 'Z') {
    				Digit = 9;
    			}
     
     
    		if (Digit==1 || Digit==2 || Digit==3 || Digit==4 || Digit==5 || Digit==6 || +
    				Digit==7 || Digit==8|| Digit==9) {
     
    			System.out.println("The corresponding number is = " + Digit);
    		}
     
    		else {
    			System.err.println("Error. Please try again.");
    		}
     
    	}
     
    }


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    Default Re: GUI program won't take 'char' input code, can't seem to find the correct one...

    Recommended reading: How to Make Dialogs (The Java™ Tutorials > Creating a GUI With JFC/Swing > Using Swing Components)
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