回文字

public class Huiwen {
    public boolean isPalindrome(String s) {
           boolean bl = true;
           int size = s.length()/2;
           for(int a=0;a<size;a++){
               if(s.charAt(a) !=(s.charAt(s.length()-1-a))){
                  return false;
               }
            }
            return bl;
        }
    public static void main(String[] args) {
        Huiwen huiwen =new Huiwen();
        
        System.out.println(huiwen.isPalindrome("123421"));
    }
}