Access modifiers in Java

Access modifiers are used to control access for variables, methods, and sometimes inner classes.

There are 4 access modifiers available:

public — accessible from everywhere. If we mark it as public it will be accessible from everywhere.

protected — accessible within the same package and child classes.

default — if we don't put anything it’s the default access modifier. It’s accessible within the same package only.

private — accessible within the same class only.

Let’s take a look at the examples with methods:

• Main and Practice are in the same package.
• We can use public, protected, and default methods in Practice class, but we have compiler error for our private method. Because it is accessible within the same class only.

The access modifiers are needed to encapsulate our code and are used with one of the OOP concepts — encapsulation.

Please take my Java Course for video lectures.
This article is part of the series of articles to learn Java programming language from Tech Lead Academy:
Introduction to programming 
OS, File, and File System
Working with terminal 
Welcome to Java Programming Language
Variables and Primitives in Java
Convert String to numeric data type
Input from the terminal in Java
Methods with Java
Java Math Operators and special operators
Conditional branching in Java
Switch statement in Java
Ternary operator in Java
Enum in Java
String class and its methods in Java
Loops in Java
Access modifiers in Java
Static keyword in Java
The final keyword in Java
Class and Object in Java
Object-Oriented Programming in Java
OOP: Encapsulation in Java
OOP: Inheritance in Java
OOP: Abstraction in Java
OOP: Polymorphism in Java
The method Overriding vs Overloading in Java
Array in Java
Data Structures with Java
Collection framework in Java
ArrayList in Java
Set in Java
Map in Java
Date and Time in Java
Exception in Java
How to work with files in Java
Design Patterns
Generics in Java
Multithreading in java
Annotations in Java
Reflection in Java
Reflection & Annotations - The Powerful Combination
Run terminal commands from Java
Lambda in Java
Unit Testing in Java
Big O Notation for coding interviews
Top Java coding interview questions for SDET