Package Scope and Information Hiding

Intermediate11 min read•Updated: 2026-10-22

🙈 Package Scope and Information Hiding in Java

Introduction

When a class member has no access modifier (omitting public, private, or protected), it has package-private (default) access: it is visible to all classes inside the same package, but completely hidden from the outside world.

🛡️ Clean Architectural Boundary

1Package: in.mskinstitute.banking.internal
2├── TransactionEngine.java (package-private: helper class hidden from outside)
3└── AccountManager.java    (public: official public interface exposed to clients)

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Java Enums: Defining Enum Types with Custom Fields and Methods

Package Scope and Information Hiding

Intermediate11 min read•Updated: 2026-10-22

Study Materials

🙈 Package Scope and Information Hiding in Java

Introduction

🛡️ Clean Architectural Boundary

1Package: in.mskinstitute.banking.internal
2├── TransactionEngine.java (package-private: helper class hidden from outside)
3└── AccountManager.java    (public: official public interface exposed to clients)

Next Lesson

Java Enums: Defining Enum Types with Custom Fields and Methods

Continue learning with hands-on practice, examples, and exercises in the upcoming topic.

Related Lessons

Previous Lesson	Next Lesson
Package Architecture, package Declaration, and import Statements	Java Enums: Defining Enum Types with Custom Fields and Methods

Practice Quiz

Test your understanding of this lesson with 1 questions. Each question has one correct answer.

Previous Next