Book Image

Java Fundamentals

By : Gazihan Alankus, Rogério Theodoro de Brito, Basheer Ahamed Fazal, Vinicius Isola, Miles Obare
Book Image

Java Fundamentals

By: Gazihan Alankus, Rogério Theodoro de Brito, Basheer Ahamed Fazal, Vinicius 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)
Java Fundamentals

Reading Data from Files

Before we begin, let's go through some fundamentals that we're going to be using in the next sections of this lesson.

Binary versus Text Files

There are many types of files in your computer: executable files, configuration files, data files, and so on. Files can be split into two basic groups: binary and text.

Binary files are used when human interaction with the files will only be indirect, such as executing an application (an executable file), or a spreadsheet file that loads inside Excel. If you try to look inside these files, you'll see a bunch of unreadable characters. This type of file is very useful because they can be made compact to take up less space and be structured so that computers can read them quickly.

Text files, on the other hand, contain readable characters. If you open them with a text editor, you can see what's in there. Not all of them are meant for humans to read and some formats are almost impossible to understand. But the majority of text files...