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Transitioning to Java

Transitioning to Java

By : Ken Fogel
4.8 (6)
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Transitioning to Java

Transitioning to Java

4.8 (6)
By: Ken Fogel

Overview of this book

This comprehensive guide will help non-Java developers already using different languages transition from their current language to all things Java. The chapters are designed in a way that re-enforces a developer’s existing knowledge of object-oriented methodologies as they apply to Java. This book has been divided into four sections, with each section touching upon different aspects that’ll enable your effective transition. The first section helps you get to grips with the Java development environment and the Maven build tool for modern Java applications. In the second section, you’ll learn about Java language fundamentals, along with exploring object-oriented programming (OOP) methodologies and functional programming and discovering how to implement software design patterns in Java. The third section shows you how to code in Java on different platforms and helps you get familiar with the challenges faced on these platforms. In the fourth section, you’ll find out how you can manage and package your Java code. By the end of this Java programming book, you’ll have learned the core concepts of Java that’ll help you successfully transition from a different language to Java.
Table of Contents (23 chapters)
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1
Part 1:The Java Development Environment
5
Part 2:Language Fundamentals
15
Part 3:GUI and Web Coding in Java
19
Part 4:Packaging Java Code

Naming identifiers

An identifier in any language is simply the name we assign to a variable, class, or method. We will first focus on naming variables, and in Chapter 5, Language Fundamentals – Classes, we will look at naming classes and methods.

There are very few rules in Java related to naming identifiers, but for those that are, the compiler enforces them. These are as follows:

  • The first character of an identifier can be one of the following:
    • Dollar sign ($)
    • Underscore (_)
    • Alpha character (AZ, az)
  • Subsequent characters can be any of the previously mentioned ones and numbers.

Once you adhere to the rules, the choice of naming is up to you. This is because Java has conventions for naming. A convention is not a rule, and the compiler does not validate them. Instead, conventions are techniques the programming community recommends for a given language. While working in a team, your fellow members expect you to follow these conventions. Here...

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