src/CheckPalindromeString.java

public class CheckPalindromeString {

    boolean checkPalindromeString(String input) {
    boolean result = true;
    int length = input.length();
    for(int i=0; i < length/2; i++) {
        if(input.charAt(i) != input.charAt(length-i-1)) {
            result = false;
            break;
        }
    }
    return result;
}

	public static void main(String[] args) {

    String word = "kayak";

    CheckPalindromeString palindrome = new CheckPalindromeString();

    System.out.print("is `");
    System.out.print(word);
    System.out.print("` a palindrome ? ");
    System.out.println(palindrome.checkPalindromeString(word));

    }

}