STRING palindrome

Question

hi I need a detail code in java to check string palindrome without using API'S

Answer 1

String palindrome = "..." // from elsewhere
boolean isPalindrome = palindrome.equals(new StringBuilder(palindrome).reverse().toString());

Answer 2

Noel's solution is actually better. But if it's for homework, you might want to do this:

public static boolean isPalindrome(String word) {
    int left = 0;
    int right = word.length() -1;

    while (left < right) {
        if (word.charAt(left) != word.charAt(right)) 
            return false;

        left++;
        right--;
    }

    return true;
}

Answer 3

public boolean checkPalindrome(string word){

for(int i=0 ; i < word.length()/2;i++)
{
  if(word.charAt(i) ! = word.charAt(word.length()-1-i))

      return false;
}

return true;
}