Monday 17 August 2015

Bean scopes annotation

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context-2.5.xsd">
      
<context:component-scan base-package="spring.bean.scope.annotations" />
</beans>
package spring.bean.scope.annotations;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Service;

@Service
@Scope("prototype")
public class Employee {
       private String name;

       public String getName() {
              return name;
       }

       public void setName(String name) {
              this.name = name;
       }
}


package spring.bean.scope.annotations;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestSingleton {
       public static void main( String[] args )  {
              ApplicationContext context = new ClassPathXmlApplicationContext(
                           new String[] {"spring/bean/scope/annotations/Spring-Customer.xml"});

              Employee custA = context.getBean("employee", Employee.class);
              //retrieve it again
              Employee custB = context.getBean("employee", Employee.class);
              if(custA == custB) {
                     System.out.println("both are same instance : prototype");
              } else {
                     System.out.println("both are different instance : prototype");
              }
       }
}
Output:
both are different instance : prototype


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