Java Chapters 1- 15 Bundled Exams Questions and Answers Multiple Versions Latest Updates (2025/2026) (Complete, Accurate, and Verified)

Java Chapter 3 Questions and Answers Graded A+ What is an object in Java? An instance of a class. How do you create an instance of a class? By using the `new` keyword, like `ClassName obj = new ClassName();` What is a constructor? A special method used to initialize objects when a class is...

Java - Chapter 5 Quiz Latest Version Graded A+ Which of the following is true about method parameters in Java? A) They must always be final B) They allow data to be passed into a method C) They must always be of type int D) They cannot be used in constructors What is required to call a ...

Java Chapter 5 Questions and Answers 100% Pass What happens if a method is declared private? A private method can only be accessed within the same class and cannot be inherited by subclasses. Can a method return null? Yes, a method can return null if its return type is a reference ty...

Java Chapter 5 Questions and Answers Latest Update Already Passed What is method chaining? Method chaining allows multiple method calls on the same object in a single statement. Can a method in Java return an array? Yes, a method can return an array of any data type. What is an abstr...

Java Chapter 5 Loops Self-Test Questions and Answers 100% Pass What type of loop is best when the number of iterations is known beforehand? A) for loop B) while loop C) do-while loop D) infinite loop Which loop executes at least once, regardless of the condition? A) for loop B) while lo...

Java Chapter 5 Questions and Answers Graded A+ What does the final keyword do when applied to a method? A) It prevents the method from being overridden B) It forces the method to return a value C) It prevents the method from being called more than once D) It allows the method to accept any...

Java Chapter 5 Questions and Answers with Verified Solutions What is a setter method? A method that allows controlled modification of a private field. How does Java support variable-length arguments in methods? By using the varargs syntax with three dots (...) in the parameter list. ...

Java Chapter 5 Questions and Answers 100% Pass What will happen if a loop has no condition and no break statement? It will run indefinitely Which loop structure is ideal for validating user input until it meets specific criteria? do-while loop How can a nested loop be terminated earl...

Java Chapter 5 Methods Questions and Answers Already Passed What happens if a method has the same name as another method but different parameters? A) It is considered an overloaded method B) It causes a compilation error C) The method is ignored D) Java does not allow this Which of the ...

Java Chapter 5 Questions and Answers Already Graded A What is the main purpose of a method in Java? A) To define variables B) To store objects C) To perform a specific task or calculation D) To create new classes Which keyword is used to define a method in Java? A) **void** B) **met...

JAVA Chapter 4 Questions and Answers Latest Version Already Passed What keyword is used to implement an interface? **implements** Can an interface have a constructor? No, interfaces cannot have constructors What happens if a class does not implement all methods of an interface? T...

Java chapter 4 Questions and Answers Already Passed What is the main purpose of the `this` keyword in Java? It refers to the current instance of the class. Can a constructor return a value in Java? No, constructors do not have a return type, not even `void`. What happens if a class...

Java Chapter 4 Questions and Answers Graded A+ What is an abstract class? An abstract class is a class that cannot be instantiated and may contain abstract methods. Can an abstract class have a constructor? Yes, an abstract class can have a constructor. What is an interface in Ja...

Java Chapter 4 Questions and Answers Rated A+ What happens if a constructor is declared **private**? A) It cannot be accessed outside the class B) It can be accessed only within the same package C) It is automatically inherited D) It is ignored by the compiler Which of the following sta...

Java Chapter 8 Questions and Answers Latest Version Already Passed What is the correct way to call a constructor of the same class within another constructor? A) `this();` B) `super();` C) `new this();` D) `return this();` Which access modifier allows a class member to be accessed only ...

Java Chapter 7: Arrays and the Array List Class Questions and Answers Graded A+ How do you add an element to an `ArrayList`? A) `Element(value);` B) `t(value);` C) `(value);` D) `(value);` What is the initial capacity of an empty `ArrayList` in Java? A) 10 B) 1 C) 0 D) It depends o...

Java Chapter 7 Arrays Questions and Answers 100% Pass What is an array in Java? A) A collection of variables of different types B) A dynamically growing data structure C) A fixed-size collection of elements of the same type D) A method to store multiple objects in a single variable Ho...

Java Ch. 8 Quiz Latest Update with Verified Solutions What is the main advantage of using inheritance in Java? A) It allows code reuse and reduces redundancy B) It prevents classes from being modified C) It forces all methods to be static D) It removes the need for constructors Which ke...

Java Chapter 7 User Defined Classes Questions and Answers Rated A+ What is a user-defined class in Java? A class created by the programmer to define custom objects with attributes and behaviors. How do you create an object from a user-defined class? By using the `new` keyword followed b...

Java Chapter 7 Questions and Answers with Certified Solutions What is a string in Java? A sequence of characters enclosed in double quotes. How do you declare a string in Java? By using the `String` class, such as `String text = "Hello";`. Are strings mutable in Java? No, str...

Java Chapter 7 Review Questions and Answers Already Passed Can a class be both a superclass and a subclass at the same time? Yes, a class can extend another class while being extended itself. What is polymorphism? Polymorphism allows a subclass to be treated as an instance of its superc...

Java Chapter 6 – Loops Questions and Answers Already Passed What is the purpose of the `break` statement in a loop? It immediately exits the loop. What does the `continue` statement do inside a loop? It skips the current iteration and moves to the next one. Can a `for` loop run ind...

JAVA Chapter 6 Questions and Answers Already Graded A Which keyword is used to define a method in Java? A) `return` B) `method` C) `void` D) `class` What happens if a method does not have a return type? A) The program will not compile B) The method must be declared with `void` C) J...

Java Chapter 6 Questions and Answers Already Passed What will happen if two objects of the same class are created? A) They share the same memory location B) They have separate memory allocations C) One object replaces the other D) They cannot exist at the same time How can an instance v...

Java Chapter 6 Questions and Answers Already Passed What is the purpose of encapsulation in Java? To protect data by restricting direct access to class fields and enforcing controlled modifications through methods. How can you create an object in Java? By using the `new` keyword follow...

Java Chapter 10 Inheritance Questions and Answers 100% Pass What happens when a superclass and subclass have a method with the same name and parameters? The subclass method overrides the superclass method. Why can’t Java support multiple inheritance? To avoid ambiguity caused by mult...

Java Ch. 10: Introduction to Inheritance Questions and Answers Already Passed What is hierarchical inheritance? Hierarchical inheritance is when multiple subclasses inherit from a single superclass. What is the purpose of the `super` keyword in Java? The `super` keyword is used to refer...

Java Chapter 10 & 11 Questions and Answers Graded A+ How do you create a custom exception in Java? By extending the `Exception` or `RuntimeException` class Which block of code is always executed in a try-catch-finally structure? The `finally` block What happens if an exception is not...

Java Ch. 10 – Inheritance Questions and Answers Graded A+ Can a subclass inherit from a final class? No, a final class cannot be extended. What does the `final` keyword do when applied to a method? A final method cannot be overridden by subclasses. Can a subclass inherit construc...

Java Chapter 10 MCQ Questions and Answers Rated A+ Can a method override another method that declares an exception? A) Yes, but the overriding method cannot throw a broader exception than the superclass method B) No, overridden methods cannot throw exceptions C) Yes, the overriding method ...

Java Chapter 10 Questions and Answers 100% Pass What is the main purpose of exception handling in Java? A) To ignore runtime errors B) To stop the program immediately C) To handle runtime errors gracefully D) To avoid compilation errors Which keyword is used to define a block of code ...

Java Chapter 10 Questions and Answers with Certified Solutions What is the primary purpose of exception handling in Java? To manage runtime errors and maintain normal program flow How do you declare a try-catch block in Java? By using `try { } catch(Exception e) { }` What happens if ...

JAVA Chapter 10 - Programming Object- Oriented Thinking Questions and Answers Graded A+ What is the purpose of an abstract class in Java? An abstract class provides a blueprint for subclasses, allowing common behaviors to be shared while enforcing specific method implementations. Why ca...

Java Chapter 9 - Objects and Classes Questions and Answers Graded A+ What is the difference between an instance variable and a local variable? An instance variable belongs to an object and persists as long as the object exists, while a local variable exists only within a method. How can ...

Java Chapter 9 Questions and Answers with Verified Solutions What is an inner class? An inner class is a class defined within another class. Can an inner class access private members of its outer class? Yes, an inner class can access all members of its outer class, including private o...

Java Chapter 9 Written Review Questions and Answers 100% Pass What happens when a class implements an interface but does not define all of its methods? The class must be declared abstract, or it will cause a compilation error. What keyword is used to indicate that a class inherits from anot...

Java Chapter 8 Multidimensional and Ragged Arrays Questions and Answers Rated A+ What is a multidimensional array in Java? An array that contains multiple arrays as its elements, forming a table-like structure. How do you declare a two-dimensional array in Java? By using two pairs of s...

Java Chapter 8 - Designing Classes Questions and Answers 100% Pass What is the main goal of designing a class in Java? To define a blueprint for objects by specifying attributes and behaviors. Why is encapsulation important in class design? It protects data by restricting direct access an...

Java Chapter 12 Questions and Answers Graded A+ What is the main purpose of Java generics? A) To make code execute faster B) To provide type safety and eliminate the need for explicit casting C) To allow multiple inheritance D) To improve garbage collection Which syntax correctly define...

Java Chapter 12 Questions and Answers with Certified Solutions A thread in Java allows multiple tasks to run concurrently. True The Runnable interface in Java has a method called run(). True A thread in Java starts executing as soon as it is created. False The start() method is use...

Java Chapter 11 Inheritance and Polymorphism Questions and Answers 100% Pass Which of the following is true about method overriding? A) It allows a subclass to provide a specific implementation of a method already defined in the parent class B) It allows multiple methods with the same name...

Java Chapter 11 Questions and Answers Already Passed What is the purpose of the instanceof operator in Java? A) It checks if an object is an instance of a specific class or subclass B) It converts an object to a superclass type C) It prevents method overriding D) It forces type conversion ...

Java Chapter 11 Questions and Answers 100% Pass What is the default access modifier in Java? Package-private, meaning the member is accessible only within the same package. What is the purpose of the toString() method in Java? It provides a string representation of an object. What is...

Java Chapter 11 Questions and Answers with Certified Solutions What is the main purpose of the Java Collections Framework? To provide a set of reusable data structures and algorithms for managing collections of objects What is the difference between an ArrayList and a LinkedList in Java?...

Java Chapter 11: Exceptions and Advanced File I/O Questions and Answers Already Passed What is an exception in Java? An exception is an event that disrupts the normal flow of a program during execution. How do you handle exceptions in Java? Exceptions in Java are handled using try-catch ...

Java Chapter 11 Questions and Answers Graded A+ What is the primary purpose of the Java Collections Framework? To provide a set of interfaces and classes for handling groups of objects efficiently. How does an ArrayList differ from an array in Java? An ArrayList is dynamically resizable...

Java Chapter 15 Questions and Answers Latest Version Graded A+ What is the purpose of the super keyword? A) To call a parent class constructor B) To declare a class as a superclass C) To reference static methods D) To create an anonymous inner class Which of these modifiers allows a var...

Java Chapter 14 Questions and Answers Latest Version Already Passed What is JavaFX primarily used for? A) Developing web applications B) Writing server-side code C) Creating graphical user interfaces D) Managing databases Which JavaFX class serves as the foundation for all JavaFX appl...

Java Chapter 14 Questions and Answers 100% Pass A static method in an interface can be called without an instance of the interface. True The Comparator functional interface is used to define custom sorting logic in Java. True Parallel streams in Java can improve performance on multi-...