What are some tips for using encapsulation in Java?

What are some tips for using encapsulation in Java?

Encapsulation in Java is about bundling data and methods that operate on that data within a single unit. Here are some tips:

1. Use private variables to restrict access.
2. Provide public getter and setter methods to control access to the variables.
3. Keep your classes focused and cohesive.

Can you explain why encapsulation is important?

Encapsulation is important because it helps protect the internal state of an object from unintended interference and misuse. It promotes modularity and makes the code easier to maintain and understand.

What are some common mistakes to avoid with encapsulation?

Common mistakes include:

1. Making variables public instead of private.
2. Overusing getters and setters, which can lead to exposing too much of the internal state.
3. Not using encapsulation when it’s necessary, which can lead to tightly coupled code.

How does encapsulation relate to inheritance?

Encapsulation and inheritance are both fundamental concepts in object-oriented programming. Encapsulation allows a class to hide its internal state, while inheritance allows a class to inherit properties and methods from another class. Proper encapsulation can help ensure that inherited classes do not inadvertently alter the state of the parent class.