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javapalindrome

Java: Figuring out if a phone number (string) is a palindrome

I need to find out if a phone number is a palindrome. I have this code:

public static boolean isPalindrome(String j)
{
  boolean pali;
  String rev = "";
  String reverse = new StringBuffer(j).reverse().toString();
  j.toString();
  if (j.equals(reverse))
     pali = false;
  else if (!j.equals(reverse))
     pali = true;
  return pali;
}

This code is giving me this error: The local variable may not have been initialized. How can I fix this?

Solution

  • By initializing the local variable:

    boolean pali = false; // Default value before you know it is a palindrome