oop-encapsulation

Installation
SKILL.md

OOP Encapsulation

Master encapsulation and information hiding to create robust, maintainable object-oriented systems. This skill focuses on controlling access to object internals and exposing well-defined interfaces.

Understanding Encapsulation

Encapsulation is the bundling of data and methods that operate on that data within a single unit, while restricting direct access to some of the object's components. This principle protects object integrity and reduces coupling.

Java Encapsulation

// Strong encapsulation with validation
public class BankAccount {
    private String accountNumber;
    private BigDecimal balance;
    private final List<Transaction> transactions;

    public BankAccount(String accountNumber, BigDecimal initialBalance) {
        if (accountNumber == null || accountNumber.isEmpty()) {
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24
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150
First Seen
Jan 22, 2026