Java Encapsulation

Encapsulation

Java supports the Encapsulation method that allows you to wrap the code and the data together within a single unit just like a capsule. You can use the private access modifier to make the encapsulated class in Java. you can easily set and get the data using setter and getter methods. For example- Java Bean.

Encapsulation Features-

• You can make any class read-only or write-only by using getter and setter method.
• It allows you to control the data stored by providing logic within the setter method.
• It allows the data hiding as other class would not be able to access the private data members of other class.
• It allows for easy unit testing.

Example-

Pack file-

package Simple_pack;  

public class Pack{  
    private int var;

   public int getVar(){
      return var; }

   public void setVar(int v)
   { 
       var=v;
    }
}  

Simple file-

package Simple_pack;

//import demo_pack.*;

class Simple {

public static void main(String args[]){  

   Pack d=new Pack(); 

d.setVar(6);

System.out.println(d.getVar());
  }  
} 

Output-