About the authors

RAOUL-GABRIEL URMA is CEO and co-founder of Cambridge Spark, a leading learning community for data scientists and developers in the UK. Raoul was nominated a Java Champion in 2017. He has worked for Google, eBay, Oracle, and Goldman Sachs. Raoul completed a PhD in Computer Science at the University of Cambridge. In addition, he holds a MEng in Computer Science from Imperial College London and graduated with first-class honors, having won several prizes for technical innovation. Raoul has delivered over 100 technical talks at international conferences.

MARIO FUSCO is a senior software engineer at Red Hat working on the core development of Drools, the JBoss rule engine. He has vast experience as a Java developer, having been involved in (and often leading) many enterprise-level projects in several industries ranging from media companies to the financial sector. Among his interests are functional programming and domain-specific languages. By leveraging these two passions, he created the open source library lambdaj with the goal of providing an internal Java DSL for manipulating collections and allowing a bit of functional programming in Java.