Tutorial by Topics: cts

Objects have states and behaviors. Example: A dog has states - color, name, breed as well as behaviors – wagging the tail, barking, eating. An object is an instance of a class.

Class − A class can be defined as a template/blueprint that describes the behavior/state that the object of its type support.

An Android application needs to run on all kinds of devices. Each device may have a different version on Android running on it.

Now, each Android version might not support all the features that your app requires, and so while building an app, you need to keep the minimum and maximum Android version in mind.

Structs are sets of various variables packed together. The struct itself is only a package containing variables and making them easily accessible.

Unlike in C, Go's structs can have methods attached to them. It also allows them to implement interfaces. That makes Go's structs similar to objects, but they are (probably intentionally) missing some major features known in object oriented languages like inheritance.

Classes and Objects are used to to make your code more efficient and less repetitive by grouping similar tasks.

A class is used to define the actions and data structure used to build objects. The objects are then built using this predefined structure.

Structures provide a way to group a set of related variables of diverse types into a single unit of memory. The structure as a whole can be referenced by a single name or pointer; the structure members can be accessed individually too. Structures can be passed to functions and returned from functions. They are defined using the keyword struct.

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