What are some examples of encapsulation in Java?

What are some examples of encapsulation in Java?

Encapsulation in Java is the bundling of data and methods that operate on that data within a single unit, usually a class. For example, a class BankAccount can encapsulate the account balance and provide methods to deposit and withdraw money.

Can you show me a code example of that?

Sure! Here's a simple example:

public class BankAccount {
    private double balance;

    public BankAccount(double initialBalance) {
        this.balance = initialBalance;
    }

    public void deposit(double amount) {
        if (amount > 0) {
            balance += amount;
        }
    }

    public void withdraw(double amount) {
        if (amount > 0 && amount <= balance) {
            balance -= amount;
        }
    }

    public double getBalance() {
        return balance;
    }
}

What are the benefits of using encapsulation?

Encapsulation helps in data hiding, reduces complexity, and increases code maintainability. It allows you to change the internal implementation without affecting the external code that uses the class.

Are there any drawbacks to encapsulation?

One potential drawback is that it can lead to more complex code structures, as you may need to create additional methods to access or modify the encapsulated data.