Simon Ritter
From Azul Systems
Simon Ritter is the Deputy CTO of Azul Systems. Simon has been in the IT business since 1984 and holds a Bachelor of Science degree in Physics from Brunel University in the U.K.
Simon joined Sun Microsystems in 1996 and spent time working in both Java development and consultancy. He has been presenting Java technologies to developers since 1999 focusing on the core Java platform as well as client and embedded applications. Now at Azul Systems he continues to help people understand Java and Azul’s JVM products.
Java, JVM, Java SE/EE
Faster Java By Adding Structs (Sort Of)
The ObjectLayout package provides a set of data structure classes designed with optimised memory layout in mind. In languages like C and C++, the use of structs and explicit pointers can deliver high performance for data access through hardware optimisations for caching and pre-fetching. Java's use of implicit pointers, mutable arrays and general inheritance forces the use of reference lookups whenever an object needs to be accessed.
This session will look at the ObjectLayout package (www.objectlayout.org), which provides a new set of APIs that are aimed at matching the natural speed benefits similar data structure constructs enable in most C-style languages while maintaining an idiomatic Java feel and a natural fit with existing code and libraries.
The session will talk through the need for these APIs then describe how they work in practice. We'll also look at how the JVM can further optimise the implementation of the API by making this intrinsic.
Java, JVM, Java SE/EE
Project Jigsaw in JDK 9: Modularity Comes To Java
Project Jigsaw will bring modularity to the Java platform; something that will enable better security, performance and flexibility for deployment of applications. This talk will look at the fundamentals of how modularity in Java will work. Developers will need to understand that these changes go significantly further than just separating the standard class libraries into a number of discrete units.
This talk will explain the impact project Jigsaw will have on developers in terms of building their applications, as well as helping them to understand how things like encapsulation will change in JDK 9.