Lessons

Class properties marked with the transient modifier are not serialized. Such fields usually store intermediate object state that may be easier to calculate than to serialize and then deserialize. Why? You'll learn in the lesson.

Text formats are convenient for storing information because they can be created and processed by both programs and humans. Text files (files in text format) can be opened, read and edited in a wide...

JSON is one of the most popular formats for representing data as text. For example, JSON is used to transfer data between the frontend and backend, in configuration files...

Another text data format is YAML (Yet Another Markup Language; later, YAML Ain't Markup Language). It is used to serialize objects for transmission over the network (just as XML and JSON are used this way). Because it is human readable, it is also used to write configuration files, for example...

Jackson is a popular library for serializing/deserializing Java objects into various text formats. The ObjectMapper class is the library's main way to work with the JSON format. For other formats, we have...

Of course, looking at the same material from different angles is useful, because everyone thinks differently, and perhaps for you the best source of the theory will be different from the source best suited to your friend. Today Professor Noodles has found you an interesting article on serialization.

Java's reflection mechanism allows a developer to make changes and obtain information about classes, interfaces, fields, and methods at runtime without knowing their names...

The Field class provides information about and dynamic access to a single field of a class or interface. Field also allows a widening type conversion during a get or set access operation...

Imagine you are assigned to create an object using reflection. Shall we get started? We'll start by writing the code for the class we want to instantiate...

You all know very well about field access modifiers. And if a field has the private modifier, then we cannot access it from the outside...

"Hi, Amigo." "Hello, Rishi." "Today I will explain a new and very interesting topic to you: dynamic proxies." "Java has several ways to change the functionality of a particular class…" "The first method is inheritance." "The easiest way to change a class's behavior is to create a new class that inherits the original (base) class, and override its methods. Then, instead of using the original class, you use the derived class. For example ..."

Reflection is a mechanism for examining data about a program at runtime. Reflection lets you analyze fields, methods, and class constructors...