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Spring Constructor arg index

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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 = (ConstructorInjectionbeanfactory
        .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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Posted on: August 2, 2010 If you enjoyed this post then why not add us on Google+? Add us to your Circles

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