Day 1

Lambda expressions

• Why Java 8?
• Behaviour Parameterisation
• What is a lambda?
• Functional interfaces: where to use lambda expressions?
• Method references: first-class functions in Java 8
• Advanced details

Streams

• Collection Processing
• Stream operations and patterns
• Stream Optimization

Collectors

• Grouping and partitioning
• Collection Operations
• Arithmetic collectors
• Advanced Queries
• Mutable Reduction

Day 2

Data Parallelism

• What is Data Parallelism?
• Why is this important?
• Parallelising your streams
• Parallel Gotchas
• Decomposition performance

Testing and Debugging Lambdas

• Unit testing lambda expressions
• Debugging with laziness
• Stack traces

Default and static methods on interfaces

• Motivation for default methods
• Static methods in interface
• Useful default methods
• Patterns for default methods
• Resolution rules

Enhanced Design with Lambdas

• Execute around: resource handling
• Deferred execution: Logging
• Design patterns

Date & Time in Java 8

• The problem with existing date and time libraries
• The core classes: LocalDate/LocalTime
• Common API Patterns
• Timezones

The Optional data type

• The problem with null
• How Optional improves upon null
• How to use Optional in your code

CompletableFuture

• Synchronous vs. Asynchronous
• Refactoring Futures
• Common patterns with CompletableFutures