Devoxx – Refactoring to Java 8 (by Trisha Gee)

A talk about refactoring to Java 8 and the impact on performance.

Why should you refactor to Java 8:

• It’s generally faster
• Easy to parallelize
• Fewer lines of code (more readable)
• Minimizes errors
• Learn the new features of Java 8

The talk shows numerous refactoring examples with performance charts comparing before and after the refactoring:

• Lambda expressions
• Lazy evaluation
• Collections & Streams
  • forEach
  • collect
  • parallel
  • collapsing multiple operations
  • anyMatch
  • findFirst
  • removeIf

Conclusion

If performance is important (which most of the time it does), do performance tests to see the impact of the refactoring as some of the new Java 8 API features aren’t necessary faster!
Your tools (e.g. IntelliJ) can help you to do the refactoring for you.

You can view the entire talk at https://www.youtube.com/watch?v=NcetKbGayZY

/JV