Java OOPC -Encapsulation

Encapsulation



In real life capsule is based for the concept Encapsulation, We use capsule for the protection and security of the medicine that inside the capsule from  of environmental conditions and other things because that conditions generated unhealthy components.

 

In here when it comes to object oriented concept Encapsulation is that data hiding, protection and security. Further this concept we use for the variables.

 

We talk about the GET and SET methods thought the concept encapsulation,

 

Getters and setters

 

For the better security we use access modifier ‘private’  ,because in private modifier only let the specific class accessing. So private variables can use outside of the specific method using GET and SET methods.

 

Indeed we use private keyword for data security purpose but in some time some specific reasons we need to use those outside of the class we define it previously, Because of this reason we use getters and setters.

 

Encapsulation use for the protect the privacy of near data  and for the  security of those through get set methods for the purpose of access inside  only that specific method.   

 

Example of the Get Set method:


The `getBalance()` method serves as a getter, allowing retrieval of the current balance from a class or object, while the `setNumber()` method functions as a setter, enabling the update or assignment of a value for a variable representing an account number.

 

 

We need Encapsulation in Java in many reasons,


o   Better Control
o   Getter & Setter
o   Security
o   Flexibility

 

Advantages of Encapsulation

 

1. Encapsulation in Java empowers a class with complete control over its data members and methods.

 

2. The class can choose to maintain its data members and methods as read-only, providing a level of access control.

 

3. Data hiding.

 

4. The variables within a class can be set as read-only or write-only, based on the specific requirements of the programmer.

 

5. Encapsulation offers the advantage of code reusability, enhancing the modular and organized design of software.


Through bellow image we can get conclusion about encapsulation,  

 



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