What is object & class in java

Published: (December 1, 2025 at 09:54 PM EST)
1 min read
Source: Dev.to

Source: Dev.to

What is Object?

Object is a real‑world entity having properties and behaviors.
For example, a pen can have properties such as color, brand, height, and diameter, and its behavior is writing.

An object is an instance of a class. Objects are typically created with the new keyword, which performs dynamic memory allocation. You can create multiple objects of the same class without any problem. An object is a physical entity.

What is Class?

A class is a blueprint for objects, similar to a building blueprint that allows the construction of many buildings with the same structure. A class contains fields, blocks, constructors, methods, and other members. It cannot contain executable statements directly. Classes are defined using the class keyword. A top‑level class can be declared public or have default (package‑private) access.

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