Generic method call using reflection

GenericClass

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.HashMap;

https://stackoverflow.com/questions/6680674/can-a-java-class-add-a-method-to-itself-at-runtime

public class GenericClass {
    private HashMap<String, Method> methodMap = new HashMap<String, Method>();

    public Object call(String methodName,Object ...args) 
               throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
        Method method = methodMap.get(methodName);
        return method.invoke(null, args);
    }

    public void add(String name,Method method){
        if(Modifier.isStatic(method.getModifiers()))
            methodMap.put(name, method);
    }

    public static void main(String[] args) {
        try   {
            GenericClass task = new GenericClass();
            task.add("Name",Object.class.getMethod("Name", new Class<?>[0]));
        } catch (NoSuchMethodException | SecurityException e) {
            e.printStackTrace();
        }
   }
}