#java Java headset Khalid mughal Black book

2 June Object: Objects are the basic one time entities in an object oriented system they may represent a person,place. They may also represent user defined datatypes, ex: Students.

Class: It is a collection of similar types of objects.

Encapsulation:It is the process by which data (variables) and the code that acts upon them (methods) are integrated as a single unit.

Inheritance: When one class applies the properties of other classes

23 JUNE 2023 Multiple Inheritance syntax: interface { variable declaration; method declaration; } example: interface Area{ final static float pi=3.14; void show(); }