What is the exact meaning of invasive? and what makes Spring non-invasive? [closed]

Answer 1

An invasive framework means that you are force to extend one of their classes or implement one of their interfaces. You can see that in frameworks like Struts or EJB2. Spring is not-invasive because avoids that. At worst, a class may be annotated with one of Spring's annotation, but it´s otherwise a POJO. So only you need a POJO like that:

package com.habuma.spring;
 public class HelloWorldBean {
  public String sayHello() {
return "Hello World";
 }
}