Need help on java H/w. Thanks Write a program that allows the user to enter a St

Question

Need help on java H/w. Thanks

Write a program that allows the user to enter a String and then uses a for loop to check whether the String is a, which means that if you reverse the order of the characters in the String you get the same String back. The program should output, String is a palindrome or not. This program and lots of code exists on the Internet. Please write a short paragraph explaining how your program works above your source code. Attach Snipping photos of source code and output. For example: Please Enter a string: noon noon is a palindrome//Output Please Enter a string: abcdcba is a palindrome//Output Please Enter a string: cat is not a palindrome//Output

Explanation / Answer

PalindromeOrNot.java

import java.util.Scanner;

public class PalindromeOrNot {

   public static void main(String[] args) {

       // Declaring variables
       String str = "", revStr = "";
       boolean bool;

       // Scanner Class Object is used to get the inputs entered by the user
       Scanner sc = new Scanner(System.in);

       // Getting the string entered by the user
       System.out.print("Please Enter a String :");
       str = sc.next();
      
       // Calling the method by passing the string as input.
       bool = testPalindrome(str);

       // based on the bool value the corresponding message will be displayed
       if (bool) {
           System.out.println(str+" is a Palindrome.");
       } else {
           System.out.println(str+" is not a Palindrome.");
       }

   }

   /*
   * This method will check whether the string is palindrome or not If the
   * String is Palindrome then it returns true If not,It returns false
   * Param:string return: boolean
   */
   private static boolean testPalindrome(String str) {

       // Declaring local variables
       String revstr = "";
       int count = 0;

       // This for loop will reverse the string
       for (int i = 0; i < str.length(); i++) {
           revstr += str.charAt((str.length() - 1) - i);
       }

       /*
       * This for loop will compare each character in the user entered string
       * and the reversed string
       */
       for (int i = 0; i < str.length(); i++) {
           if (str.charAt(i) != revstr.charAt(i))
               return false;
       }

       return true;

   }

}

__________________

Output:

Please Enter a String :noon
noon is a Palindrome.

__________________

Output2:

Please Enter a String :abcdcba
abcdcba is a Palindrome.

_________________

Output3:

Please Enter a String :cat
cat is not a Palindrome.

________________

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