What is an object how is it different from an ordinary variable and a class explain with an example?
Table of Contents
What is an object how is it different from an ordinary variable and a class explain with an example?
Class Vs. Object
| Class | Object |
|---|---|
| You can declare class only once. | You can create more than one object using a class. |
| Example: Car. | Example: Jaguar, BMW, Tesla, etc. |
| Class generates objects | Objects provide life to the class. |
| Classes can’t be manipulated as they are not available in memory. | They can be manipulated. |
What is a variable in OOP?
In programming, a variable is a value that can change, depending on conditions or on information passed to the program. In object-oriented programming , each object contains the data variables of the class it is an instance of.
What are the differences between a variable and an object in Java?
In Java, no variable can ever hold an object. A variable can only hold a reference to an object. In effect, a reference to an object is the address of the memory location where the object is stored. When you use a variable of object type, the computer uses the reference in the variable to find the actual object.
What is the difference between variable and data object?
Basically, a pointer is a variable (or, more generally, a data object)whose value is a memory address. Consider an assignment statement. Its purpose is to store a value at a memory location. Data object is a general term for a region of data storage that can be used to hold values.
What is variable and object?
a variable is a place to hold data. an object has pre-defined values/functions attributed to it.
Can a variable be called as an object?
Variables are objects with names. I just used int as an example. Datatypes are all classes, structs, and enums, and primitive types on top of that.
Is object a reference variable?
In short, object is an instance of a class and reference (variable) points out to the object created in the heap area.
What is the difference between variable and object in Python?
In Python, variables are references to objects and any variable can reference any object. A variable is created by simply using it. That is, variables in Python are dynamic, untyped and are references to objects. Objects in Python are simply named collections of attributes.