encapsulation program in java
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encapsulation in java: a tutorial
*what is encapsulation?*
encapsulation is one of the four fundamental object-oriented programming (oop) concepts. it refers to the bundling of data (attributes) and methods (functions) that operate on that data into a single unit or class. encapsulation restricts direct access to some of an object’s components, which can prevent the accidental modification of data. this is typically achieved using access modifiers.
*benefits of encapsulation:*
1. *control:* you can control how the data is accessed and modified.
2. *flexibility and maintenance:* changes in the implementation of a class can be made without affecting other parts of the program.
3. *increased security:* sensitive data can be hidden from outside interference and misuse.
4. *improved code readability:* encapsulation makes the code cleaner and easier to understand.
how to implement encapsulation
1. *declare variables as private:* this restricts direct access to the class attributes.
2. *provide public methods (getters and setters):* these methods allow controlled access to the private variables.
example code
let’s create a simple example of a `bankaccount` class to demonstrate encapsulation.
using the `bankaccount` class
now, let’s create a main class to demonstrate how we can use the `bankaccount` class with encapsulation.
explanation of the code
1. *private variables:*
`accountholdername` and `balance` are declared as private, meaning they can't be accessed directly from outside the class.
2. *constructor:*
the constructor initializes the account holder's name and the initial balance.
3. *getters:*
`getaccountholdername()` and `getbalance()` methods provide controlled access to the private variables.
4. *methods for operations:*
`deposit(double amount)` allows adding money to the account but checks if the amount is positive.
`withdraw(double amount)` checks if the amount is valid and whether the bala ...
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