oop-encapsulation
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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