Additional Notes
Why should fields in a Java class be private?
Track: Java
Topic: OOP
Focus: Encapsulation
Java: Encapsulation
Answer
Fields should be private to control access and protect the object's state.
Making fields private ensures that they can't be accessed or modified directly from outside the class. This helps maintain control over how the data is accessed and changed, allowing you to enforce rules and validations. For example, in an e-commerce application, a Product class might have a private field `price`. By keeping it private, you can control how and when the price is updated, perhaps through a method that ensures the new price is never negative.
Making fields private ensures that they can't be accessed or modified directly from outside the class. This helps maintain control over how the data is accessed and changed, allowing you to enforce rules and validations. For example, in an e-commerce application, a Product class might have a private field `price`. By keeping it private, you can control how and when the price is updated, perhaps through a method that ensures the new price is never negative.
Topics: Encapsulation Java OOP