java jaxb unmarshall xml to map

1// An Example of using JAXB to convert a map to XML , written in Java.
2public static void main(String[] args) throws JAXBException 
3{
4    HashMap<Integer, Employee> map = new HashMap<Integer, Employee>();
5     
6    Employee emp1 = new Employee();
7    emp1.setId(1);
8    emp1.setFirstName("Lokesh");
9    emp1.setLastName("Gupta");
10    emp1.setIncome(100.0);
11     
12    Employee emp2 = new Employee();
13    emp2.setId(2);
14    emp2.setFirstName("John");
15    emp2.setLastName("Mclane");
16    emp2.setIncome(200.0);
17     
18    map.put( 1 , emp1);
19    map.put( 2 , emp2);
20     
21    //Add employees in map
22    EmployeeMap employeeMap = new EmployeeMap();
23    employeeMap.setEmployeeMap(map);
24     
25    /******************** Marshalling example *****************************/
26     
27    JAXBContext jaxbContext = JAXBContext.newInstance(EmployeeMap.class);
28    Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
29 
30    jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
31 
32    jaxbMarshaller.marshal(employeeMap, System.out);
33    jaxbMarshaller.marshal(employeeMap, new File("c:/temp/employees.xml"));
34}
35 
36Output:
37 
38<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
39<employees>
40    <employeeMap>
41        <entry>
42            <key>1</key>
43            <value>
44                <id>1</id>
45                <firstName>Lokesh</firstName>
46                <lastName>Gupta</lastName>
47                <income>100.0</income>
48            </value>
49        </entry>
50        <entry>
51            <key>2</key>
52            <value>
53                <id>2</id>
54                <firstName>John</firstName>
55                <lastName>Mclane</lastName>
56                <income>200.0</income>
57            </value>
58        </entry>
59    </employeeMap>
60</employees>
61

1// An example of using JAXB to convert XML to MAP
2
3private static void unMarshalingExample() throws JAXBException 
4{
5    JAXBContext jaxbContext = JAXBContext.newInstance(EmployeeMap.class);
6    Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
7    EmployeeMap empMap = (EmployeeMap) jaxbUnmarshaller.unmarshal( new File("c:/temp/employees.xml") );
8     
9    for(Integer empId : empMap.getEmployeeMap().keySet())
10    {
11        System.out.println(empMap.getEmployeeMap().get(empId).getFirstName());
12        System.out.println(empMap.getEmployeeMap().get(empId).getLastName());
13    }
14}
15     
16Output:
17 
18Lokesh
19Gupta
20John
21Mclane
22