This document contains over 100 fully solved multiple-choice and true/false questions from Chapter 6 of the Intro to Java Programming (CS101) course for the 2025/2026 academic year. It is tailored for first-year students in Computer Science, Software Engineering, and IT programs and is also a strong resource for learners preparing for Java foundations exams or technical interviews focused on object-oriented programming and method design.
The content covers essential Java OOP principles and method-level logic, structured in a clear Q&A format with all answers provided and verified. It includes both theoretical questions and code-based logic exercises.
Key topics covered:
Classes and Objects: understanding class templates, instances, attributes, and behaviors
UML Diagrams: interpreting and translating UML into Java code
Constructors and Fields: constructor syntax, instance fields, default and no-arg constructors
Method Design: access specifiers (public, private), overloading, return types, parameters
Scope and Encapsulation: variable visibility, this keyword, shadowing, data hiding
Reference Variables and Memory: storage models, how objects are accessed and passed
String and Random Classes: correct instantiation and use
Package Usage: import statements, , , explicit vs wildcard imports
OOP Concepts: encapsulation, data abstraction, responsibilities of classes
Common Pitfalls: compilation errors, uninitialized objects, incorrect constructors, misuse of access levels
The document ends with a rich True/False section addressing practical Java behaviors, making it excellent for quick review and error-spotting practice.
This resource is ideal for:
University CS101 students reviewing for exams or quizzes
Java learners aiming to master class/method design
Coding bootcamp participants studying Java OOP principles
Certification candidates preparing for OCAJP or similar foundational tests
Tutors assembling Java-focused assessments
Keywords:
Java Chapter 6, Java classes, Java methods, Java UML, Java constructors, Java overloading, Java object-oriented programming, Java field scope, Java access specifiers, Java Random class, Java import packages, CS101 Java, Java true/false quiz, Java exam questions
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Java Chapter 6 2025/2026 Exam
Questions and Answers | 100% Solved
1) One or more objects may be created from a(n):
A) field
B) class
C) method
D) instance - 🧠ANSWER ✔✔Answer: B
2) Class objects normally have ________ that perform useful operations on
their data, but primitive
variables do not.
A) fields
B) instances
,C) methods
D) relationships - 🧠ANSWER ✔✔Answer: C
3) In the cookie cutter metaphor, think of the ________ as a cookie cutter
and ________ as the cookies.
A) object; classes
B) class; objects
C) class; fields
D) attribute; methods - 🧠ANSWER ✔✔Answer: B
4) Which of the following are classes from the Java API?
A) Scanner
B) Random
C) PrintWriter
D) All of the above - 🧠ANSWER ✔✔Answer: D
5) When you are working with a ________, you are using a storage
location that holds a piece of data.
A) primitive variable
, B) reference variable
C) numeric literal
D) binary number - 🧠ANSWER ✔✔Answer: A
6) What is stored by a reference variable?
A) A binary encoded decimal
B) A memory address
C) An object
D) A string - 🧠ANSWER ✔✔Answer: B
7) Most programming languages that are in use today are:
A) procedural
B) logic
C) object-oriented
D) functional - 🧠ANSWER ✔✔Answer: C
8) Java allows you to create objects of this class in the same way you
would create primitive variables.
A) Random
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