Quiz

1. Which keyword is used to declare a constant in Java?

const

static

final

immutable

2. Which of the following is NOT a primitive data type in Java?

int

float

String

boolean

3. What is the purpose of the `new` keyword in Java?

To declare a variable

To create a new class

To allocate memory for a new object

To define a method

4. Which access modifier provides the highest level of visibility in Java?

private

protected

public

default

5. What is method overriding in Java?

Creating a new method with the same name in the same class

Defining a new method in a derived class with a different name

Defining a new method in a derived class with the same name and same parameters

Defining a new method in a base class with the same name and same parameters

6. What is the role of the 'static' keyword in Java?

To make a class immutable

To indicate that a method belongs to the class itself, not an instance

To define an abstract method

To make the variable or method protected

7. Which statement is used to handle exceptions in Java?

catch

throw

try-catch

handle

8. What is the purpose of the `this` keyword in Java?

To create a new object

To refer to the current class

To refer to the current object

To call a superclass constructor

9. Which interface represents a collection that does not allow duplicate elements?

List

ArrayList

Set

Map

10. Which is the correct way to iterate an ArrayList?

for (int i=0; i < arrayList.length; i++)

for (int i=0; i <= arrayList.length(); i++)

for (int i=0; i < arrayList.size(); i++)

for (String value : arrayList)

list_alt_check QuizExam