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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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Reading a Properties File

Property files store key-value (also called key-map) pairs in a standard format. An example of the content of such a file is:

#user information
name=Ramiro
familyName=Rodriguez
userName=ramiroz
age=37
bgColor=#000000

This is a made-up example of the properties file for an imaginary user. Note how the comment is marked using a hashtag symbol, #. You will use properties files to store the configurable parameters of applications or even for localization strings.

Let's try reading a properties file. You can create a text file in the same temporary folder that we created in the user's space earlier in the chapter. Name it user.properties and write to it the contents of the preceding example. This follows an example of a program using java.io to read and print out the contents of a properties file. Given the way Java works, there is no better alternative to performing this task than using java.nio.

Note

Reading the contents of a properties...

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The Java Workshop
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