What is JAXB Unmarshaller?

What is JAXB Unmarshaller?

The JAXB Unmarshaller interface is responsible for governing the process of deserializing the XML data to Java Objects. The unmarshalling to objects can be done to variety of input sources.

What is JAXB used for?

JAXB simplifies access to an XML document from a Java program by presenting the XML document to the program in a Java format. The first step in this process is to bind the schema for the XML document into a set of Java classes that represents the schema.

How do you Unmarshal with JAXB?

JAXB Unmarshalling Example: Converting XML into Object

1. Create POJO or bind the schema and generate the classes.
2. Create the JAXBContext object.
3. Create the Unmarshaller objects.
4. Call the unmarshal method.
5. Use getter methods of POJO to access the data.

What is Qname in JAXB?

@XmlRootElement is an annotation that people are used to using with JAXB (JSR-222). It’s purpose is to uniquely associate a root element with a class. Since JAXB classes map to complex types, it is possible for a class to correspond to multiple root elements.

What is the difference between marshalling and Unmarshalling?

Marshalling is the process of transforming the memory representation of an object to a data format suitable for the storage and transmission. Unmarshalling refers to the process of transforming a representation of an object that is used for storage or transmission to a representation of the object that is executable.

When should JAXB be used?

JAXB stands for Java Architecture for XML Binding. It provides mechanism to marshal (write) java objects into XML and unmarshal (read) XML into object. Simply, you can say it is used to convert java object into xml and vice-versa.

Is JAXB deprecated?

In Java SE 9 and 10, the module java.se.ee, which contains JAX-WS, JAXB and a few other Java EE APIs, is still included but is deprecated, and not included in the module path by default. You need to explicitly enable it if you want to use it.

What is XmlElementDecl?

The annotation creates a mapping between an XML schema element declaration and a element factory method that returns a JAXBElement instance representing the element declaration. The class containing the element factory method annotated with @XmlElementDecl must be marked with XmlRegistry .

What is marshalling in logistics?

marshalling area. A location in the vicinity of a reception terminal or pre-positioned equipment storage site where arriving unit personnel, equipment, materiel, and accompanying supplies are reassembled, returned to the control of the unit commander, and prepared for onward movement.