longest pal

public class LongestPalindrome {

    public static void main(String args[]) {
        System.out.println("hello world");

        System.out.println(palindrome("1111123211141443"));
        System.out.println(isPalindrome("12321"));

    }

    private static String palindrome(String string) {

        String temp = new String ();
        String longest = new String ();
        int max = 0;

        for (int i=0; i<string.length(); i++)
        {
            for (int j=i; j<string.length(); j++) {
                temp = string.substring(i, j);
                if(isPalindrome(temp.toString()))
                    if (temp.length() > max)
                    {
                        max = temp.length();
                        longest = temp;
                    }
            }
        }
        return longest.toString();
    }

    private static boolean isPalindrome(String temp) {

        for(int i=0, j=temp.length()-1; i<temp.length()/2; i++, j--)
            if (temp.charAt(i)!=temp.charAt(j))
                return false;
        return true;
    }

}