Back to Writing Classes

Lesson PreviewLesson 5 of 10 in this unit

5.5 Mutator Methods

Part of Writing Classes in AP® Computer Science A. Read the opening section, then create a free account for the full interactive lesson, practice, and progress tracking.

Start free

Mutator methods, also called setter methods, allow us to modify private fields in a controlled and predictable way. They help us achieve encapsulation, a principle that protects an object's internal state and ensures its integrity by controlling how external code interacts with its data.

In this unit

10 lessons

  1. 5.1Anatomy of a ClassPreview lesson
  2. 5.2ConstructorsPreview lesson
  3. 5.3Documentation with CommentsPreview lesson
  4. 5.4Accessor MethodsPreview lesson
  5. 5.5Mutator MethodsThis lesson
  6. 5.6Writing MethodsPreview lesson
  7. 5.7Static Variables and MethodsPreview lesson
  8. 5.8Scope and AccessPreview lesson
  9. 5.9this KeywordPreview lesson
  10. 5.10Ethical and Social Implications of Computing SystemsPreview lesson

Continue the full lesson in Stellar

Create a free account to unlock the remaining sections, checkpoints, course practice, and progress tracking for AP® Computer Science A.

Start free