Unit 24 - Java Basics

When programming, you have to use Data Types. Which of the following refers to interfaces, classes, and arrays?

• Primitive

• Non-Primitive

• Arrays

• Boolean

Classes and interfaces use a certain type of data type. Which one is it?

• Primitive

• Non-primitive

• Floating Point

• None of the answers

What is the main difference between float and double data types?

• 4.1 is an example of float.

• 4.11 is an example of double.

• Float consists of 8 bytes, and double consists of 4 bytes.

• Float consists of 4 bytes, and double consists of 8 bytes.

What kind of data type is used for numbers?

• Integer

• String

• Boolean

• Floating Point

Java Tokens help the compiler. Which of the following is a type of Java Token?

• Identifiers

• Keywords

• Operators

• All of the answers.

What is a blueprint and determines how an object will behave?

• Object

• Method

• Attribute

• Class

In a typical Java program, which of the following are crucial?

• Methods, Attributes, Classes

• Classes, Methods, Data Types

• Classes, Methods, Objects

• None of the answers

To make a particular type of data useful, you need to have properties and methods included in a self-contained component. This component also has a memory location allocated. What is it?

• Class

• Method

• Value

• Object

Classes usually define operations that can be used by objects. What are these operations referred to as?

• Objects

• Classes

• Methods

• Actions

What is displayed in the picture?

• A class called Employee.

• An employee object.

• A method for new employee.

• An employee.