Intro to Java – Unit 3 Quiz (Objects, Classes, Methods, Encapsulation) + Answer Key

This printable, classroom-ready Java Unit 3 Quiz is designed to assess student understanding of foundational object-oriented programming concepts, including objects, classes, fields, constructors, methods, encapsulation, access modifiers, and method overloading. The quiz is clean, structured, student-friendly, and perfectly aligned to high school Computer Science courses.

This resource includes a fully formatted DOCX file with bold section headers, shaded code blocks, and a professional layout that matches the Mr. H Codes curriculum style. An answer key is included at the end of the document for easy grading.

✔️ What’s Included

📄 Student Quiz (DOCX)
Covers Lessons 3.1–3.4

• Section A — Multiple Choice (6 questions)
  
• Section B — Output Prediction (3 problems with Java code)
  
• Section C — Debug the Code (2 broken Java snippets to fix)
  
• Section D — Short Answer (3 conceptual questions)
  
• Section E — Coding Prompt (encapsulation-focused class-writing task)

🧩 Answer Key (Included in DOCX)

• Correct multiple-choice answers
  
• Exact output for prediction problems
  
• Fully corrected Java code for debugging
  
• Sample short-answer responses
  
• Completed Student class example for the coding task

🎓 Skills Assessed

• Understanding of objects and classes
  
• Knowing the purpose of fields, constructors, and methods
  
• Using the this keyword
  
• Method parameters, return values, and overloading
  
• Encapsulation and access modifiers (private, public)
  
• Reading, predicting, and debugging Java code
  
• Writing complete class definitions

Perfect for AP CSA-aligned courses, Intro to Java classes, or any OOP unit.

⭐ Why Teachers Love This Quiz

• Clear formatting and student-friendly layout
  
• Professionally structured sections
  
• Low-prep, ready to print
  
• Aligned with common high school Java pacing
  
• Provides both conceptual AND coding-based assessment
  

📘 Standards Alignment (CSTA & Common CS Concepts)

• CSTA 3A-AP-16: Design and iteratively develop computational artifacts
  
• CSTA 3A-AP-14: Use libraries and APIs to simplify tasks
  
• CSTA 3A-CS-03: Evaluate the components of a computing system
  
• General OOP foundations: classes, objects, encapsulation, constructors, fields, methods
  

💬 Perfect For

• Summative unit quizzes
  
• AP CSA practice assessments
  
• Review days
  
• Coding unit benchmarks
  
• Sub plans with coding reinforcement