Spring Note 03 (Create object, Di set value injection, auto assemble (autowire))

1. Three ways to create objects: 01. Animal Interface Code:

 Package Cn.pb.dao; /**  */Publicinterface  Animal    {// meals     String eat ();     // Sleep    void sleep ();}

Implementation of the 02.Animal interface Class dog code:

 PackageCn.pb.dao.impl;/*** Animal Implementation class*/ImportCn.pb.dao.Animal; Public classDogImplementsanimal{/*** Non-parametric constructs verify when instances are created*/     PublicDog () {System.out.println ("The dog was instantiated!" "); }     PublicString Eat () {System.out.println ("The way to eat"); return NULL; }     Public voidsleep () {System.out.println ("The Way to Sleep"); }    //the method after initialization     Public voidinit () {System.out.println ("Methods after Initialization"); }    //methods prior to destroying     Public voiddestroy () {System.out.println ("Methods prior to destruction"); }}

03. How to create an object:001. Create objects by construction method (Common way):

Appicationcontext.xml

Spring Note 03 (Create object, Di set value injection, auto assemble (autowire))