Private Keyword in Java

Java Programming Java 8Object Oriented Programming

Private Access Modifier - Private

Methods, variables, and constructors that are declared private can only be accessed within the declared class itself.

Private access modifier is the most restrictive access level. Class and interfaces cannot be private.

Variables that are declared private can be accessed outside the class, if public getter methods are present in the class.

Using the private modifier is the main way that an object encapsulates itself and hides data from the outside world.


The following class uses private access control −

public class Logger {
   private String format;

   public String getFormat() {
      return this.format;

   public void setFormat(String format) {
      this.format = format;

Here, the format variable of the Logger class is private, so there's no way for other classes to retrieve or set its value directly.

Updated on 23-Jun-2020 15:23:06