Productivity

• Generics: How They Work and Why They Are Important by Josh Juneau
• Gain a solid understanding of generics in Java SE 8.

• JSR 308 Explained: Java Type Annotations by Josh Juneau
• The benefits of type annotations and example use cases.

Class Optional

• Tired of Null Pointer Exceptions? Consider Using Java SE 8's Optional! by Raoul-Gabriel Urma
• Make your code more readable and protect it against null pointer exceptions.

Lambdas

• Mary Had a Little Lambda by Stephen Chin
• Get familiar with lambdas and the Stream API through a simple game.

• Lambdas, Part 1 by Ted Neward
• Get to know lambda expressions in Java 8.

• Lambdas, Part 2 by Ted Neward
• Learn how to use lambda expressions to your advantage.

• State of the Lambda by Brian Goetz

• OTN Interview with Brian Goetz
• Java Chief Language Architect Brian Goetz takes on the question of why lambda expressions took so long to implement and how lambdas will impact developers.

• Collection enhancements leveraging Lambda Expressions – or: How Java emulates SQL by Lucas Jellema
• Lambdas introduce a powerful Inversion of Control in Java – allowing a clear and elegant distinction between the what [should be done] and how [should it be done]. Under certain circumstances Java is very similar to SQL!

• NightHacking Worldwide: Lambdas Part 1, Presentation
• NightHacking Worldwide: Lambdas Part 2, Q&A

• Java 8 Lambdas Pragmatic Functional Programming by Richard Warburton (Early Access Edition)
• This book shows you how to make use of your existing skills to adapt your thinking and codebase to use Lambda expressions properly.

Streams

• Processing Data with Java SE 8 Streams, Part 2 by Raoul-Gabriel Urma
• Combine advanced operations of the Stream API to express rich data processing queries.

• Processing Data with Java SE 8 Streams, Part 1 by Raoul-Gabriel Urma
• Use stream operations to express sophisticated data processing queries.

Compact Profiles

• Exploring Java 8 Profilesby Ben Evans
• What can Compact Profiles do for your application?

• Java SE Embedded 8 Compact Profiles Overview
• Compact Profiles have a smaller storage footprint to enable many Java applications to run on resource-constrained devices.

• An Introduction to Java 8 Compact Profiles by Jim Connors
• Java 8 will define subset profiles of the Java SE platform specification that developers can use to deploy (an interim solution before Project Jigsaw arrives).

• JDK 8 Compact Profiles for Embedded and Oracle ADF Mobile by Bob Vandette
• This JavaOne 2013 session describes the contents of Compact Profiles, how to build and use them, and the details of the Oracle-provided OpenJDK and binary implementations for Java Embedded and the Oracle ADF Mobile feature of Oracle Application Development Framework (Oracle ADF).

Date and Time

• Java SE 8 Date and Time by Ben Evans and Richard Warburton
• Why do we need a new date and time library?

• Java 8 Date and Time API with Jim Gough
• Live Coding on the Java 8 Date and Time API with Jim Gough from the London Java Community (LJC).

Polyglot

• Oracle Nashorn: A Next-Generation JavaScript Engine for the JVM by Julien Ponge
• Scenarios for using Oracle Nashorn as aan embedded interpreter in Java applications

Embedded

• Java ME 8 and the Internet of Things by Steve Meloan and Terrence Barr
• Top features of Java ME 8.

• Java Flight Recorder and Java Mission Control on Java SE Embedded 8
• This article gives an introduction to Java Mission Control and how you can use it to monitor, manage, profile and diagnose your applications when running on the Java SE Embedded 8 small device platforms.

Other Topics

• Migrating to Java 8 by Geertjan Wielenga
• In this video, learn how to get started migrating your application to JDK 8.

• Migrating to Java 8 with NetBeans by Brett Ryan
• NetBeans IDE 8.0 has full support for JDK 8 and an awesome tool that will analyse your project and convert blocks of code to JDK 8 equivalents all in one bulk migration operation.

Java SE 8 Playlist on YouTube/Java