Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Java Fundamentals
  • Table Of Contents Toc
  • Feedback & Rating feedback
Java Fundamentals

Java Fundamentals

By : Gazihan Alankus , Rogério Theodoro de Brito , Basheer Ahamed Fazal , Isola, Miles Obare
1 (1)
close
close
Java Fundamentals

Java Fundamentals

1 (1)
By: Gazihan Alankus , Rogério Theodoro de Brito , Basheer Ahamed Fazal , Isola, Miles Obare

Overview of this book

Since its inception, Java has stormed the programming world. Its features and functionalities provide developers with the tools needed to write robust cross-platform applications. Java Fundamentals introduces you to these tools and functionalities that will enable you to create Java programs. The book begins with an introduction to the language, its philosophy, and evolution over time, until the latest release. You'll learn how the javac/java tools work and what Java packages are - the way a Java program is usually organized. Once you are comfortable with this, you'll be introduced to advanced concepts of the language, such as control flow keywords. You'll explore object-oriented programming and the part it plays in making Java what it is. In the concluding chapters, you'll get to grips with classes, typecasting, and interfaces, and understand the use of data structures, arrays, strings, handling exceptions, and creating generics. By the end of this book, you will have learned to write programs, automate tasks, and follow advanced courses on algorithms and data structures or explore more advanced Java courses.
Table of Contents (12 chapters)
close
close
Java Fundamentals
Preface

Integral Data Types


Integral types are types that have integer values. These are int, long, short, byte, and char.

int Data Type

The int data type is used to represent integers. Integers are 32-bit numbers in the range of -2,147,483,648 to 2,147,483,647. Example of integers are 0, 1, 300, 500, 389 230, 1,345,543, -500, -324,145, and others in that range. For example, to create an int variable to hold a value 5, we write the following:

int num = 5;

The num variable is now an int with a value of five. We can also declare more than one variable of the same type in one line:

int num1, num2, num3, num4, num5;

Here, we have created five variables, all of the int type, and initialized to zero. We can also initialize all of the variables to a specific value, as follows:

int num1 = 1, num2 = 2, num3 = 3, num4 = 4, num5 = 5;

In addition to expressing integers in decimal format, we can also express integers in octal, hexadecimal, and binary format:

As a summary of the aforementioned four formats of representing...

Visually different images
CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
Java Fundamentals
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon