java code for Collection Injection

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

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














Rob
Harrop




Hello World!





Hello World!






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

public interface Oracle {

public String defineMeaningOfLife();
}

///////////////////////////////////////////////////////////////////////////////////////
public class Encyclopedia {

}



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

public class BookwormOracle implements Oracle {

private Encyclopedia enc;

public void setEncyclopedia(Encyclopedia enc) {
this.enc = enc;
}

public String defineMeaningOfLife() {
return "Encyclopedia's are a waste of money - use the Internet";
}

}

///////////////////////////////////////////////////////////////////////////////////////
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;

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

public class CollectionInjection {

private Map map;

private Properties props;

private Set set;

private List list;

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

CollectionInjection instance = (CollectionInjection) factory.getBean("injectCollection");
instance.displayInfo();
}

public void setList(List list) {
this.list = list;
}

public void setSet(Set set) {
this.set = set;
}

public void setMap(Map map) {
this.map = map;
}

public void setProps(Properties props) {
this.props = props;
}

public void displayInfo() {

// display the Map
Iterator i = map.keySet().iterator();

System.out.println("Map contents:\n");
while (i.hasNext()) {
Object key = i.next();
System.out.println("Key: " + key + " - Value: " + map.get(key));
}

// display the properties
i = props.keySet().iterator();
System.out.println("\nProperties contents:\n");
while (i.hasNext()) {
String key = i.next().toString();
System.out.println("Key: " + key + " - Value: "
+ props.getProperty(key));
}

// display the set
i = set.iterator();
System.out.println("\nSet contents:\n");
while (i.hasNext()) {
System.out.println("Value: " + i.next());
}

// display the list
i = list.iterator();
System.out.println("\nList contents:\n");
while (i.hasNext()) {
System.out.println("Value: " + i.next());
}
}
}