//File: beans.xml

<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>

<!-- oracle bean used for a few examples -->
<bean id="oracle" name="wiseworm" class="BookwormOracle"/>

<!-- collection injection samples -->
<bean id="injectCollection" class="CollectionInjection">
<property name="map">
<map>
<entry key="someValue">
<value>Hello World!</value>
</entry>
<entry key="someBean">
<ref local="oracle"/>
</entry>
</map>
</property>
<property name="props">
<props>
<prop key="firstName"> Rob </prop>
<prop key="secondName"> Harrop </prop>
</props>
</property>
<property name="set">
<set>
<value>Hello World!</value>
<ref local="oracle"/>
</set>
</property>
<property name="list">
<list>
<value>Hello World!</value>
<ref local="oracle"/>
</list>
</property>
</bean>
</beans>

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

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());
}
}
}