Question

Consider the following sample program:

import java.util.Scanner;

public class Palindrome
{
public static void main(String[] args){
Scanner kb = new Scanner(System.in);
System.out.println("Enter a word:");
String word = kb.next();
  
String reverse = "";
for (int i=word.length()-1; i>=0; i--)
reverse += word.charAt(i);
boolean result = reverse.equalsIgnoreCase(word);
  
if (result)
System.out.println("The word " +word+ " is a Palindrome.");
else
System.out.println("The word " +word+ " is not a Palindrome.");
}
}

Rewrite the program so that the main method is:

public static void main(String[] args){

String word = getWordFromUser();

boolean result = checkPalindrome(word);

displayResult(result, word);

}

Answer 1

import java.util.Scanner;

public class Palindrome {

    public static void main(String[] args) {
        String word = getWordFromUser();
        boolean result = checkPalindrome(word);
        displayResult(result, word);
    }

    public static void displayResult(boolean result, String word) {
        if (result)
            System.out.println("The word " + word + " is a Palindrome.");
        else
            System.out.println("The word " + word + " is not a Palindrome.");
    }

    public static boolean checkPalindrome(String word) {
        String reverse = "";
        for (int i = word.length() - 1; i >= 0; i--)
            reverse += word.charAt(i);
        return reverse.equalsIgnoreCase(word);
    }

    public static String getWordFromUser() {
        Scanner kb = new Scanner(System.in);
        System.out.println("Enter a word:");
        return kb.next();
    }
}