Java by API/javax.xml.bind/JAXBContext

JAXBContext: createMarshaller() throws JAXBException

   <source lang="java">
 

import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBException; import javax.xml.bind.annotation.XmlAttribute; import javax.xml.bind.annotation.XmlRootElement; @XmlRootElement public class Weird {

   private String value;
   
   @XmlAttribute(name="value")
   private String svalue;
   public String getValue() {
       return value;
   }
   public void setValue(String value) {
       this.value = value;
   }
   public static void main(String[] args) throws JAXBException {
       Weird w = new  Weird();
       w.value="foo";
       w.svalue="bar";
       JAXBContext context = JAXBContext.newInstance(Weird.class);
       context.createMarshaller().marshal(w, System.out);
   }

}

 </source>
   
  
 
  

JAXBContext: createUnmarshaller()

   <source lang="java">
 

import generated.Item; import java.io.File; import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBElement; import javax.xml.bind.JAXBException; import javax.xml.bind.Unmarshaller; public class UnmarshallingDemo {

   public static void main (String [] args) {
       try {
           JAXBContext jc = JAXBContext.newInstance ("generated");
           Unmarshaller u = jc.createUnmarshaller ();
          File f = new File ("item.xml");
          JAXBElement element = (JAXBElement) u.unmarshal (f);
          Item item = (Item) element.getValue ();
          System.out.println (item.getCode ());
          System.out.println (item.getName ());
          System.out.println (item.getPrice ());
      } catch (JAXBException e) {
          e.printStackTrace ();
      }
  }

}

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">

   <xsd:element name="item" type="Item"/>
   <xsd:complexType name="Item">
       <xsd:sequence>
           <xsd:element name="code" type="xsd:string"/>
           <xsd:element name="name" type="xsd:string"/>
           <xsd:element name="price" type="xsd:double"/>
       </xsd:sequence>
   </xsd:complexType>

</xsd:schema>

 </source>
   
  
 
  

JAXBContext.newInstance(Class... classesToBeBound)

   <source lang="java">
 

import java.io.FileOutputStream; import javax.xml.bind.JAXBContext; import javax.xml.bind.Marshaller; import javax.xml.bind.annotation.XmlRootElement; public class JavaToXMLDemo {

 public static void main(String[] args) throws Exception {
   JAXBContext context = JAXBContext.newInstance(Employee.class);
   Marshaller m = context.createMarshaller();
   m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
   Employee object = new Employee();
   object.setCode("CA");
   object.setName("Cath");
   object.setSalary(300);
   m.marshal(object, System.out);
 }

} @XmlRootElement class Employee {

 private String code;
 private String name;
 private int salary;
 public String getCode() {
   return code;
 }
 public void setCode(String code) {
   this.code = code;
 }
 public String getName() {
   return name;
 }
 public void setName(String name) {
   this.name = name;
 }
 public int getSalary() {
   return salary;
 }
 public void setSalary(int population) {
   this.salary = population;
 }

} <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <employee>

   CA
   <name>Cath</name>
   <salary>300</salary>

</employee>

 </source>