Concepts Of Java Programming

Variable: In programming language variable is a container which contains some known or unknown values. In java programming variable are known as identifier.

programming language এ variable হলো একটি পাত্র  যেখানে কোনো ডেটা রাখা হয় / জাভা প্রোগ্রামিং এ variable কে identifier বলা হয়।  

Operation: In java programming operation is combination of some instruction which are used to process data in the variable.

Operation are include Variable assignment, Variable reading, Loops and conditional statement (if ... else).

Class:  class is the blueprint from which individual objects are created. A class can have fields, constructors and methods.

Interfaces: In java programming Interfaces is a central concept. An interface describes what methods a certain object should have available on it. A class can implement an interface. When a class implements an interface, the class has to must implement all of the methods described in the interface.

Package: - Package is central concept. A package is combination of multiple classes.