Now we will see a program to understand the concept of setter injection with map.

Required Files:

1. Customer.java

2. spConfig.xml

3. Test.java

Customer.java

package java8s;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
public class Customer {
    private Map data;
    public void setData(Map data) {
        this.data = data;
    }
    public void print() {
        Set s = data.entrySet();
        Iterator itr = s.iterator();
        while (itr.hasNext()) {
            Map.Entry m = (Map.Entry) itr.next();
            System.out.println(m.getKey() + " --- " + m.getValue());
        }
    }
}

springConfig.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:p = "http://www.springframework.org/schema/p"
    xsi:schemaLocation = "http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
    <beans>
    <bean id = "id3"  class = "java8s.Customer">
    <property name = "data">
        <map>
            <entry key = "k101">
            <value> 350 </value></entry> 
            <entry key = "k102">
                <value> java8s </value> 
            </entry> 
            <entry key = "k103">
                <value> 123.456 </value> 
            </entry> 
        </map> 
    </property> 
    </bean> 
</beans>

Test.java

Package java8s;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
public class Test {
    public static void main(String[] args) {
        Resource resource = new ClassPathResource("springConfig.xml");
        BeanFactory bf = new XmlBeanFactory(resource);
        Customer c = (Customer) bf.getBean("id3");
        c.print();
    }
}