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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

A special case – String

A string, with a lowercase s, is a list of characters that usually represent a word we may write or speak. String, with a capital S, is a class that contains a list of zero or more characters and numerous operations that you can perform on them. As a class, it normally must be instantiated into an object. As developers commonly use String objects, Java can perform the instantiation implicitly whenever you use the assignment operator (=) with a String variable. When referring to this data type, we always capitalize the first letter. This way, we know that we are referring to the String class. We will cover classes and objects in more depth in the coming chapter.

Let us examine String and how we use it. We begin with the specification table:

Table 4.6 – Specs for String and how we can use it

In this table, Size in bytes refers to two parts of String. The first, called a reference, is a variable that contains the address...

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