SESSION ABSTRACTS

19:00 THE SINCEREST FORM OF FLATTERY

For decades, functional programmers have been saying they know the way to the future.

Clearly, since imperative languages are still far more popular, they've been wrong.

However, they've also clearly been right, as functional programming's advantages have become increasingly obvious. Is it possible to combine the two models?

Scala is one language that does this, but Java is also continuing its journey of learning from functional languages and carefully adding features from them. With Maurice we reviewed what Java has learned from functional languages, what it can still learn, and how its added features compare to Scala's original ones.

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**20:00 Drinks and food courtesy of our wonderful **partner network

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20:15 JAVA COLLECTIONS PUZZLERS

The Java Collections Framework is the most widely used API – probably in your application too. You use it all the time, but do you really know your way around it?

You can be surprised even by common classes like ArrayList and HashMap, let alone by the handling of null values or immutability in lesser-known classes.

In this interactive session Maurice will be joined by local Java software developer Hanna Golikova, to look at some obvious code and its less-than-obvious effect. It’s up to you to guess the outcome! But everything will be explained, and you’ll end up knowing how to avoid pitfalls, both well-known and obscure, in using the Collections Framework.

ABOUT MAURICE NAFTALIN

Four+ decades as a programmer, teacher, and author. Java Champion, frequent conference speaker. Disorganiser of JAlba, best unconference in Scotland! Author "Mastering Lambdas". Currently revising "Java Generics and Collections" for a second edition.

Find him on Twitter @mauricenaftalin

ALSO! Learn Lambdas, Streams and Connectors During the day, Maurice is providing instructor-led training - find out about it here >>>

About the Oracle Dublin Java User Group

The Oracle Dublin Java User Group, aka DubJUG, is Ireland's oldest JUG serving Java developers in Ireland. Since 2006, the Group has been bringing Java Champions, Java One Rock Stars, and Duke Award winners to Dublin for the benefit of our community of Java software professionals. Oracle is the current Headline Partner.

To be among the first to hear about our Java events subscribe to our event notifications or waiting list above.

Aside from our website DubJUG.org, we can also be found on your favourite social networks. LinkedIn / Facebook / Twitter

DubJUG Partners

Our headline partner, Oracle is committed to offering choice, flexibility and a lower cost of computing for customers, and demonstrate this commitment by investing significant resources in developing, testing, optimizing, and supporting a wide variety of open source technologies.

For further details on some of the open source technologies in Oracle Cloud please visit developer.oracle.com/opensource

Oracle Cloud is the industry’s broadest and most integrated public cloud. It offers best-in-class services across software as a service (SaaS), platform as a service (PaaS), and infrastructure as a service (IaaS), and even lets you put Oracle Cloud in your own data centre. Oracle Cloud helps organisations drive innovation and business transformation by increasing business agility, lowering costs, and reducing IT complexity.

Website: Oracle / Twitter: Oracle_UKI

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Version 1 is a trusted technology partner to major domestic and international customers across all industry sectors in the UK and Ireland. Their Java practice has grown to over 120 people over the last few years, and continues to grow. Many of their Java customers use a significant amount of open-source tools and technologies, and therefore Version 1 work with the community to hear other Java success stories, learn more about people’s experiences, and bring in Java experts and champions to get the latest on what’s going on in that space.

Website: Version1.com / Twitter: Version1Tweets

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Stackand.Co have been enriching the professional lives of Java software professionals for over 20 years experience. They have helped many great people elevate their careers, and local companies acquire with the best developers for their teams.

Perhaps they can do the same for you working with companies like this one?

Website: Stackand.Co / Twitter: StackanddotCo

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ViaSat, a global team of fearless innovators finding better ways to develop the ultimate global communications network to impact people's lives anywhere they are—on the ground, in the air or at sea.

Viasat Ireland develops in-flight experience products and platforms for the global aviation industry, pushing the boundaries of what’s possible across the entire travel experience by developing entertainment, operational and connectivity solutions that transform travel for airlines and passengers by enhancing engagement, loyalty and performance.

Website: Careers.Viasat.com / Twitter: @ViasatAviation

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Global Payments Inc makes it easy for business to accept payments online, on mobile and in-app blending global coverage, local expertise and the best possible service to help drive business growth. Headquarted in Atlanta, they have a thriving technology division based on Sir John Rogerson's Quay.

Website: GlobalPaymentsInc.com / Twitter: GlobalPayInc

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Teckro builds mobile first, Cloud based SaaS Technology solutions, used by the global pharmaceutical companies to change how they conduct clinical Trials.

Using the latest technology including Kotlin, Spring Boot, REST APIs, React, ES6, Swift, MySQL, Apache Kafka, Maven, Gradle, Cassandra, Git, Docker, Kubernetes, Helm, Datadog, AWS, Sonar and much more, Teckro’s makes a real difference globally. Quality of life is improved. In the end, lives will be saved.

Website: www.teckro.com/ / Twitter: @teckroofficial

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Liberty IT is part of Liberty Mutual Insurance. We’re the cogs behind the #78 Fortune-ranked company, the key drivers behind their global digital enablement journey, reimagining insurance by delivering an ever more efficient service for our customers.

Website: LibertyIT.co.uk / Twitter: @Liberty_IT

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Equifax Technology Ireland is the Research and Development arm of global credit scoring organisation Equifax - it has recently opened a technology centre in the Bloodstone Building, Dublin 2.

Now looking for developers!

Website: Equifax.com / Twitter: Equifax

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GuruTeam delivers high end ICT learning, mentoring and consultancy services, in Ireland, the UK and worldwide. Their expert instructors formulate bespoke training to suit their clients and can deliver programmes on or offsite.

Website: GuruTeamIrl.com / Twitter: GuruTeamIreland

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Hazelcast delivers the System of Now™, an in-memory computing platform that empowers Global 2000 enterprises to deliver innovative, low-latency, data-centric applications

Website: Hazelcast.com.com / Twitter: @Hazelcast

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Technology companies **JetBrains, Synchronoss, and FINEOS **also support our community - find out more about them here.