spring example

hi,


I am looking below spring example

http://www.dzone.com/tutorials/java/spring/spring-ioc-1.html

I have not understood clearly below lines
>>Let's have a look at the class diagram of this example. The green arrows indicate generalization and the blue arrows indicates association.



what is the difference between generalization and association

>>Here the component only needs to choose a way to accept the resources and the container will deliver the resource to the components.

what is the component and what is resource nd what is contrainer(is it is spring container or web container)

>>After making all the changes, the class diagram of the example look like this.



How the class diagram was different from previous diagram and what are the main changes for that in genralization and association after addign spring. How to understand, make the changes to class diagram.

Please advise.


Any links resources ideas highly appreciated. Thanks in advance