Singleton Scope And Prototype Scope : Singleton « Spring « Java Tutorial

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Java Tutorial » Spring » Singleton   28. 11. 4. Singleton Scope And Prototype Scope File: context.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"        xmlns:util="http://www.springframework.org/schema/util"        xsi:schemaLocation="                 http://www.springframework.org/schema/beans                 http://www.springframework.org/schema/beans/spring-beans.xsd                 http://www.springframework.org/schema/util                 http://www.springframework.org/schema/util/spring-util.xsd">     <bean id="singleMe" class="java.lang.String" scope="singleton">         <constructor-arg type="java.lang.String" value="Singleton"/>     </bean>     <bean id="prototypeMe" class="java.lang.String" scope="prototype">         <constructor-arg type="java.lang.String" value="Prototype"/>     </bean> </beans> File: Main.java import org.springframework.beans.factory.BeanFactory; import org.springframework.beans.factory.xml.XmlBeanFactory; import org.springframework.core.io.ClassPathResource; public class Main {   private static void compare(final BeanFactory factory, final String beanName) {     String b1 = (String)factory.getBean(beanName);     String b2 = (String)factory.getBean(beanName);     System.out.println("Bean b1=" + b1 + ", b2=" + b2);     System.out.println("Same?  " + (b1 == b2));     System.out.println("Equal? " + (b1.equals(b2))); } public static void main(String[] args) {     BeanFactory factory = new XmlBeanFactory(                         new ClassPathResource("context.xml"));     compare(factory, "singleMe");     compare(factory, "prototypeMe");     compare(factory, "requestMe"); } }   Download:  Spring-SingletonScopeAndPrototypeScope.zip( 2,599 k) 28. 11. Singleton 28. 11. 1.  Prototype Singleton 28. 11. 2.  BeanFactory PreInstantiate Singletons Integration 28. 11. 3.  Spring Prototype 28. 11. 4.  Singleton Scope And Prototype Scope