import javax.swing.JOptionPane;

/**
 * User IO is a class that supports the retrieal of users input and output to the command line.
 */
public class UserIO {
    
    /** private constructor Userinput does not require to be an instance */
    private UserIO() {}
    
    /** 
     *Gets input from the user returns the result as a string
     */
    public static String getStringFromUser(String question)
    {
        String userInput = "";
        userInput = JOptionPane.showInputDialog( question );
        
        return userInput;
    }
    
     /** 
     *Gets input from the user returns the result as a string
     */
    public static int getIntFromUser(String question)
    {
        String userinput = getStringFromUser(question);
        int result=-1;
        try
        {
            result = Integer.parseInt(userinput);
        }
        catch(NumberFormatException ex)
        {
            throw new NumberFormatException ("The number given was not a whole numeric value.");
        }
        return result;
    }
}