Source Code : Constructor Confusion

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Constructor Confusion

/*
Pro Spring
By Rob Harrop
Jan Machacek
ISBN: 1-59059-461-4
Publisher: Apress
*/

///////////////////////////////////////////////////////////////////////
//File: beans.xml

<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
    <!-- ctor confusion -->
    <bean id="constructorConfusion" class="ConstructorConfusion">
        <constructor-arg type="int">
            <value>90</value>
        </constructor-arg>
    </bean>
</beans>


///////////////////////////////////////////////////////////////////////


import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.FileSystemResource;

public class ConstructorConfusion {

    private String someValue;

    public ConstructorConfusion(String someValue) {
        System.out.println("ConstructorConfusion(String) called");
        this.someValue = someValue;
    }

    public ConstructorConfusion(int someValue) {
        System.out.println("ConstructorConfusion(int) called");
        this.someValue = "Number: " + Integer.toString(someValue);
    }

    public static void main(String[] args) {
        BeanFactory factory = new XmlBeanFactory(new FileSystemResource(
                "build/beans.xml"));

        ConstructorConfusion cc = (ConstructorConfusion) factory.getBean("constructorConfusion");
        System.out.println(cc);
    }

    public String toString() {
        return someValue;
    }
}           
       

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