This program demonstrates two key string manipulation tasks: replacing characters in a string and checking if a string is a palindrome. The main method integrates these functionalities, allowing user interaction to showcase the results.

• Signature:

  public static String replace(String value, char find, char replacer)

  • Description:
    This method returns a new string where all occurrences of the character find in the input string are replaced with the character replacer.

  • Constraints: The input string may contain any characters. All occurrences of find are replaced.

• Signature:

  public static boolean isPalindrome(String value)

  • Description:
    This method checks if the given string is a palindrome.A string is a palindrome if it reads the same forwards and backwards, ignoring case.

  • Example:

    • "madam" is a palindrome.
    • "racecar" is a palindrome.
    • "hello" is not a palindrome.

  • Constraints:

    • Ignore case during the check.

• Signature:

  public static void main(String[] args)
  • Description:
    1. Prompt the user to input a string.
    2. Prompt the user to input a find character and a replacer character.
    3. Use the replace method to replace the specified character.
    4. Use the isPalindrome method to check if the input string is a palindrome.
    5. Print the modified string and the palindrome status.

• The program should handle all possible string inputs without restrictions.

• Use only for loops or while loops to implement the tasks.
• Avoid using any built-in string manipulation methods such as substring, toCharArray, or others.
• The only allowed method is length() to determine the length of the string.