Factory Method
Spring Inversion of Control (IoC ) also known as
Dependency Injection (DI ) is a process by which
objects define their dependencies with collaborating objects.
This example shows getting a DriverManager instance by invoking a static factory method
package com.bethecoder.tutorials.spring3.basic; public class DriverManager { private static DriverManager clientService = new DriverManager () ; private DriverManager () { } public static DriverManager getInstance () { return clientService; } }
package com.bethecoder.tutorials.spring3.tests.factory; import org.springframework.beans.factory.xml.XmlBeanFactory; import org.springframework.core.io.ClassPathResource; import com.bethecoder.tutorials.spring3.basic.DriverManager; public class FactoryMethod { /** * @param args */ public static void main ( String [] args ) { XmlBeanFactory factory = new XmlBeanFactory ( new ClassPathResource ( "factory_method.xml" )) ; DriverManager driverMgr1 = ( DriverManager ) factory.getBean ( "driverMgr1" ) ; System.out.println ( driverMgr1 ) ; DriverManager driverMgr2 = ( DriverManager ) factory.getBean ( "driverMgr2" ) ; System.out.println ( driverMgr2 ) ; } }
com.bethecoder.tutorials.spring3.basic.DriverManager@c39a20
com.bethecoder.tutorials.spring3.basic.DriverManager@c39a20
