Write Your First String Program

First create a POJO class

Right Click on

SRC ( inside application 1)à newà class

Write any package name like I’m writing com.alok and give class name like Book then click finish

package com.alok;

public class Book

{

      private String title;

      private String author;

      public Book()

      {

            System.out.println("Book()");

      }

      public String getTitle() {

            System.out.println("getTitle");

            return title;

      }

      public void setTitle(String title) {

            System.out.println("set title");

            this.title = title;

      }

      public String getAuthor() {

            System.out.println("getAuthor");

            return author;

      }

      public void setAuthor(String author) {

            System.out.println("set Author");

            this.author = author;

      }

     

}

Inside config.xml register this POJO class with a unique bean id

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

      xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

<bean id="b1" class="com.alok.Book">

      <property name="title" value="java made easy"></property>

      <property name="author" value="prince"></property>

</bean>

</beans>

 à b1 is pointing to a object which is already created then we are calling setTitle and setAuthor 

à inside config.xml, for every bean tag, object is created

à All Setter method is calling before delimiter itself

Now Develop a Client Program

src-->com.alok-->new--> class

BookClient.java

package com.alok;

import org.springframework.beans.factory.BeanFactory;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class BookClient {

public static void main(String[] args) {

BeanFactory fac=new ClassPathXmlApplicationContext(new String[]{"config.xml"});

System.out.println("----111-----");

Book b1=(Book)fac.getBean("b1");

System.out.println("----222-----");

System.out.println(b1.getTitle());

System.out.println(b1.getAuthor());

}

}

à  While creating beanFactory object inside config.xml, corresponding setter and getter method is calling

try to understand output

output:-

Book()

set title

set Author

Book()

set title

set Author

----111-----

----222-----

getTitle

java made easy

getAuthor

prince