Jeff Friesen

Jeff Friesen teaches Java technology (including Android) to everyone via articles, blogs, books, and software. In addition to writing Java books for Apress, Jeff has written numerous articles on Java and other technologies for JavaWorld, InformIT, Java.net, and SitePoint. Jeff can be contacted via his website at JavaJeff.ca.


Java library evolution and other puzzlers

Java library evolution and other puzzlers

Exploring puzzling code to figure out why it doesn't do what seems obvious is one way to improve your programming skills. Puzzle yourself today!

Java 9's other new enhancements, Part 6: Concurrency

Java 9's other new enhancements, Part 6: Concurrency

Java 9 introduces a publish-subscribe framework for reactive streams, improvements to the CompletableFuture class, and other concurrency enhancements

Java 101: Regular expressions in Java, Part 2

Java 101: Regular expressions in Java, Part 2

Complete your introduction to the Regex API, then find out how regular expressions make quicker work of common tasks like code documentation and lexical analysis.

Java 101: Regular expressions in Java, Part 1

Java 101: Regular expressions in Java, Part 1

Pattern matching is an important technique used in text processing, and Regex is here to help. Find out how to use the Pattern class and constructs like quantifiers and boundary matchers to describe patterns in your Java programs.

Java 9's other new enhancements, Part 5: Stack-Walking API

Java 9's other new enhancements, Part 5: Stack-Walking API

Replacing StackTraceElement, the new Stack-Walking API supports filtering and lazy access to stack trace information, and makes it easier to obtain the caller class

Java 9's other new enhancements, Part 4: Multi-release JAR files

Java 9's other new enhancements, Part 4: Multi-release JAR files

A Java 9 extension to the JAR file format makes it easier for third-party libraries and frameworks to use language and API features from newer Java releases

Java 101: Interfaces in Java

Java 101: Interfaces in Java

Extracting class interfaces into Java interfaces can increase the reusability of your code, but only if you know how to use their special properties.

Java 9's other new enhancements, Part 3: The Process API

Java 9's other new enhancements, Part 3: The Process API

Updates to the Process API will make it easier to obtain a process ID, get additional information about a process, and execute actions on process termination

Java 9's other new enhancements, Part 2: Milling Project Coin

Java 9's other new enhancements, Part 2: Milling Project Coin

JEP 213 builds on Java 7's Project Coin with small language improvements and additions for your Java programs

Java 9's other new enhancements, Part 1: Factory methods in Java Collections

Java 9's other new enhancements, Part 1: Factory methods in Java Collections

The module system and REPL tool have received widespread attention, but Java's newest release has much more to offer. This series introduces other enhancements to Java 9, beginning with the new convenience factory methods in the Java...

Android Studio for beginners, Part 4: Advanced tools and plugins

Android Studio for beginners, Part 4: Advanced tools and plugins

Use built-in tools and third-party plugins to profile, debug, and extend your Android applications in Android Studio

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