Spring Constructor arg index

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Spring Constructor arg index
Posted on: August 2, 2010 at 12:00 AM

In this example you will see how inject the arguments into your bean according to the constructor argument index.

Constructor Arguments Index

In this example you will see how inject the arguments into your bean according to the constructor argument index.

ConstructorInjection.java


package net.roseindia;



public class ConstructorInjection {

  private String name = null;

  private int roll;



  public ConstructorInjection(String name, int roll) {

    this.name = name;

    this.roll = roll;

  }



  public String getMessage() {

    return name;

  }



  public int getValue() {

    return roll;

  }

	}

ConstructorInjectionTest.java


package net.roseindia;



import org.springframework.beans.factory.BeanFactory;

import org.springframework.context.support.ClassPathXmlApplicationContext;



public class ConstructorInjectionTest {

  public static void main(String[] args) {

    BeanFactory beanfactory = new ClassPathXmlApplicationContext(

        "context.xml");

    ConstructorInjection bean = (ConstructorInjection) beanfactory

        .getBean("springMessage");

    System.out.println(bean.getMessage());

    System.out.println(bean.getValue());

  }

}

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:aop="http://www.springframework.org/schema/aop"

	xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

	<bean id="springMessage" class="net.roseindia.ConstructorInjection">

	   <constructor-arg index="0" value="Aakash Pandey" />

	   <constructor-arg index="1" value="1001" />

  </bean>

</beans>

When you run this application it display output as shown below:

Aakash Pandey
1001

Download this example code

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