String Pallendrom Checking in Java

public class Pallendrom {

      public boolean isPallendrom(String str) {

            char[] chars = str.toCharArray();

            int lchar = chars.length;

            for(int i=0; i<lchar/2; i++){

                  if(chars[i]!=chars[lchar-1-i]){

                        return false;

                  }

            }

            return true;

      }

      public static void main(String[] args) {

            String a = "12321";

            Pallendrom p = new Pallendrom();

            if(p.isPallendrom(a)){

                  System.out.println(a + " is Pallendrom.");

            }else{

                  System.out.println(a + " is not Pallendrom.");

            }

      }

}