Speakers: Miroslav Wegner and Benedikt Neumayr

For more see the table of contents

Byte code optimization

• Inlining
• Elimination
• Scalarization

Design patterns

• SOLID
• DRY don’t repeat yourself
• Separation of concerns
• CAP – two of three (consistency, availability, partition tolderance)

Creating objects

• Factory vs Builder
• Example of using a builder with a sealed class
• Factory: List.of(…)
• Switch expression to determine what to create in factory

Organizing code

• Organize code around instantiated objects: Adapter, Flyweight
• Spiterator is an adapter
• IntegerCache is Flyweight

Enforcin behavior at runtime

• Chain of responsibility, command, caching
• Logger is chain of responsibility
• Runnable and Callable are command

Concurrency

• Thread pool pattern
• Executors

My take

I liked the one line ”safe harbor” statement that anything could change. Nice link between patterns we’ve known forever and new (and old) classes. There was a good crowd. I wish they had a room vs being on the floor of the exhibit hall. I also wish it was longer (vs a 20 min session)