Past Meetup

Pragmatic Functional Refactoring with Java 8

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This is a virtual Meetup occuring at 5PM UK time. For help with your timezone calculation, refer to this (http://time.is/1700_2_Sept_2014_in_London/San_Francisco/New_York/UTC/Beijing/Sydney/Tokyo?Pragmatic_Functional_Refactoring_with_Java_8).

You can tune in to the session at http://virtualJUG.com (http://virtualjug.com/)

If all fails, you can still access YouTube and IRC via previous means:

1) Join the IRC channel (https://webchat.freenode.net/?channels=#virtualJUG) - Ask questions, chat, discuss

2) View the live stream on YouTube (http://www.youtube.com/user/virtualJUG/live)

Pragmatic Functional Refactoring with Java 8

You may be hearing a lot of buzz around functional programming. For example, Java 8 recently introduced new features (lambda expressions and method references) and APIs (Streams, Optional and CompletableFutures) inspired from functional ideas such as first-class functions, composition and immutability.

However, what does this mean for my existing codebase?

In this talk we show how you can refactor your traditional object-oriented Java to using FP features and APIs from Java 8 in a beneficial manner.

We will discuss:

- How to adapt to requirement changes using first-class functions
- How you can enhance code reusability using currying
- How you can make your code more robust by favouring immutability over mutability
- How you can design better APIs and reduce unintended null pointer exceptions using an optional data type

Speakers: Richard Warburton & Raoul-Gabriel Urma

Richard is an empirical technologist and solver of deep-dive technical problems. Recently he has written a book on Java 8 Lambdas for O’Reilly. He’s worked as a developer in many areas including Statistical Analytics, Static Analysis, Compilers and Network Protocols. He is a leader in the London Java Community and runs Openjdk Hackdays. Richard is also a known conference speaker, having talked at JavaOne, Devoxx, JFokus, Devoxx UK, Geecon, JAX London and Codemotion. He has obtained a PhD in Computer Science from The University of Warwick.

Raoul-Gabriel Urma is a PhD candidate in Computer Science at the University of Cambridge. He is co-author of the book Java 8 in Action: lambdas, streams, and functional-style programming published by Manning. In addition, Raoul has written over 10 peer-reviewed articles, delivered over 20 technical talks at international conferences and is a professional Java trainer. He has worked for large companies such as Google, eBay, Oracle, and Goldman Sachs, as well as for several startup projects. Raoul is also a Fellow of the Royal Society of Arts.