@Value annotation

[pramod talekar]

Hi,

Could you please tell why Q and 2 and not P & 1 are getting printed in the below code :

package com.test;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.support.GenericXmlApplicationContext;
import org.springframework.stereotype.Service;

@Service("injectSimple")
public class InjectSimple {
	@Value("Q")
	private String name;

	@Value("2")
	private int number;

	public InjectSimple() {
	}

	@Autowired
	public InjectSimple(@Value("P") String name, @Value("1") int number) {

		this.name = name;
		this.number = number;

	}

	public String toString() {
		return "Name : " + name + " , " + " Number : " + number;
	}

	public static void main(String[] args) {
		GenericXmlApplicationContext ctx = new GenericXmlApplicationContext();
		ctx.load("test-servlet-Annotation.xml");
		ctx.refresh();

		InjectSimple simple = (InjectSimple) ctx.getBean("injectSimple");
		System.out.println(simple);
	}
}

Thanks.

[Kathleen Angeles]

Spring used your constructor (having P and 1).

Then it set the properties (overwriting with Q and 2).

You can debug by putting System.out.println inside the constructor method, showing that the program passed that area.

The first 2 steps in a bean cycle are (from Spring In Action 3rd Edition):
1. Spring instantiates the bean.
2. Spring injects values and bean references into the bean’s properties.
3. <etc....>

-k

[SpringSource Certified Spring Professional - Practice Tests]