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The Java Workshop

The Java Workshop

By : David Cuartielles , Andreas Göransson, Foster-Johnson
3.1 (8)
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The Java Workshop

The Java Workshop

3.1 (8)
By: David Cuartielles , Andreas Göransson, Foster-Johnson

Overview of this book

Java is a versatile, popular programming language used across a wide range of industries. Learning how to write effective Java code can take your career to the next level, and The Java Workshop will help you do just that. This book is designed to take the pain out of Java coding and teach you everything you need to know to be productive in building real-world software. The Workshop starts by showing you how to use classes, methods, and the built-in Collections API to manipulate data structures effortlessly. You’ll dive right into learning about object-oriented programming by creating classes and interfaces and making use of inheritance and polymorphism. After learning how to handle exceptions, you’ll study the modules, packages, and libraries that help you organize your code. As you progress, you’ll discover how to connect to external databases and web servers, work with regular expressions, and write unit tests to validate your code. You’ll also be introduced to functional programming and see how to implement it using lambda functions. By the end of this Workshop, you’ll be well-versed with key Java concepts and have the knowledge and confidence to tackle your own ambitious projects with Java.
Table of Contents (20 chapters)
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Introduction

Exceptions are not errors, or, more accurately, exceptions are not bugs, even if you might perceive them to be when they crash your programs. Exceptions are situations that occur in your code when there is a mismatch between the data you are handling and the method or command you are using to process it.

In Java, there is a class that is dedicated to errors. Errors are unexpected situations that affect programs on the Java Virtual Machine (JVM) level. For example, if you fill-up the program stack through an unconventional use of memory, then your whole JVM will crash. Unlike errors, exceptions are situations that your code, when properly designed, can catch on the fly.

Exceptions are not as drastic as errors, even if the result for you, the developer, will be the same—that is, a non-working program. In this chapter, we are inviting you to make your programs crash by intentionally provoking exceptions that you will later learn how to catch (that is, handle...

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