Hello...this is my firt post...

Question

i need your help in this one...im doing a palindrome program...
"application that reads in a five-digit integers and determines whether
or not it is a palindrome. if the number is not a five-digits long. displays
an error message dialog indicating the problem to the user.when
dismisses the error dialog, allow the user to enter new value. Using
GUI cotrols..."
thats it...thanks

Answer 1

You cna do the swing part on your own. I don't know any of that stuff.
import java.util.Scanner;
public class Caller
    private static final int PALINDROME_LENGTH = 5;
    public static void main(String args[])
        Scanner in = new Scanner( System.in );
        String userInput = "";
        do
            System.out.print( "Enter your palindrome of length "
                + PALINDROME_LENGTH + ": " );
            userInput = in.nextLine();
            if ( userInput.length() == PALINDROME_LENGTH )
                if ( isPalindrome( userInput ) )
                    System.out.println( "Your number " + userInput
                        + " is a palindrome" );
                else
                    System.out.println( "Your number " + userInput
                        + " is NOT a palindrome" );
            else
                System.out.println( "Invalid length" );
        while ( !userInput.equalsIgnoreCase( "exit" ) );
    private static boolean isPalindrome(String s)
        int halfLength = (PALINDROME_LENGTH - 1) / 2;
        char[] chars = s.toCharArray();
        for ( int i = 0; i < halfLength; i++ )
            if ( !(chars[i] == chars[PALINDROME_LENGTH - 1 - i]) )
                return false;
        return true;
}