Invoke a method on an object with parameters

import java.lang.reflect.Method;

public class Main {
  public static void main(String[] args) throws Exception {
    String firstWord = "Hello ";
    String secondWord = "everybody.";
    String bothWords = append(firstWord, secondWord);
    System.out.println(bothWords);
  }

  public static String append(String firstWord, String secondWord)
      throws Exception {
    String result = null;
    Class c = String.class;
    Class[] parameterTypes = new Class[] { String.class };
    Method concatMethod;
    Object[] arguments = new Object[] { secondWord };
    concatMethod = c.getMethod("concat", parameterTypes);
    result = (String) concatMethod.invoke(firstWord, arguments);
    return result;
  }
}