Access modifiers

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Access modifiers

In this lesson, we will learn about two Keywords: public and private.

These keywords (access modifiers) determine whether a method /field can be accessed from other classes or not.

Private members can be accessed only from within the class

Public members can be accessed From anywhere


class Data { 

// private variable

private String name; 

} 

class Main { 

public static void main(String[] main) { 

// create an object of Data

Data d1 = new Data(); 

d1.name = "Java";  // Error code 
          
 }}
          
/*Output 

Main. Java:13: error: name has 
Private access in Data 
D1.name = "Java"; 

Inside the Main class, we have created an object of the Data class and accessed the name field. Since the name field is private to the Data class, it cannot be accessed from the Main class. That’s why the program throws an error. */

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