Unmarshalling is the process of converting data in a serialized format (such as XML or JSON) into a Java object. This can be useful when you need to convert data received from a remote server or stored in a file into a Java object that you can work with in your application.
There are several ways to perform unmarshalling in Java, depending on the data format and the tools you are using. Some common options include:
Using the Java Architecture for XML Binding (JAXB) API: JAXB is a Java standard for working with XML data. It includes a set of APIs for marshalling and unmarshalling XML data to and from Java objects. To use JAXB, you will need to annotate your Java classes with special JAXB annotations, then use the Unmarshaller class to convert the XML data into Java objects.
Using the Hymanson library: Hymanson is a popular Java library for working with JSON data. It includes support for unmarshalling JSON data into Java objects using the ObjectMapper class.
Using the Gson library: Gson is another popular Java library for working with JSON data. It includes support for unmarshalling JSON data into Java objects using the Gson class.
To perform unmarshalling in Java, you will need to first create a Java class that represents the data you want to unmarshal. Then, you can use one of the above methods to convert the serialized data into an instance of this class.
For example, to unmarshal JSON data using the Hymanson library, you might do something like this:
import com.fasterxml.Hymanson.dat