This document introduces Xtend, a programming language created for Java developers. Xtend aims to improve on Java by incorporating features from other JVM languages while maintaining 100% Java interoperability. Key features include Java's type system and libraries, IDE support, functional programming capabilities, extension methods, and exceptional domain-specific language support through the use of active annotations that can participate in compilation and enhance derived Java code. The document concludes with a thank you and information about the creators of Xtend.

1. A Language
made for
Java Developers
(c) 2012 itemis AG

2. About me
@szarnekow

7. IDEs, Tools,...

8. IDEs, Tools,...
Open-Source

9. IDEs, Tools,...
Open-Source
Community

10. IDEs, Tools,...
Open-Source Standard Library
Community

11. IDEs, Tools,...
Should we really throw all those assets away?
Open-Source Standard Library
Community

12. IDEs, Tools,...
Should we really throw all those assets away?
How about just fixing the
Open-Source Standard Library
problematic bits?
Community

14. Java’s Type System & Libraries

15. Java’s Type System & Libraries
Java’s IDE Support

16. Java’s Type System & Libraries
Java’s IDE Support
Functional Programming

17. Java’s Type System & Libraries
Java’s IDE Support
Functional Programming
Extension Methods

18. Java’s Type System & Libraries
Java’s IDE Support
Functional Programming
Extension Methods
Exceptional DSL Support

19. A clean, fast and
statically typed Groovy

20. A simpler Scala, with
100% Java interoperability

21. CoffeeScript for Java

22. Demo

23. Exceptional DSL Support

24. Exceptional DSL Support
Annotations
on

25. Steroids

26. Java’s Annotation Processing Tool (apt):
apt is a [..] utility for annotation processing. It includes a set
of reflective APIs [..] to process program annotations[..].
These [..] APIs provide a build-time, source-based, read-only
view of program structure. They [..] model the Java™
programming language's type system[..].
[..] annotation processors [..] can produce new source code
and other files. [..]
http://docs.oracle.com/javase/6/docs/technotes/guides/apt/index.html

27. Java’s Annotation Processing Tool (apt):
apt is a [..] utility for annotation processing. It includes a set
of reflective APIs [..] to process program annotations[..].
These [..] APIs provide a build-time, source-based, read-only
view of program structure. They [..] model the Java™
programming language's type system[..].
[..] annotation processors [..] can produce new source code
and other files. [..]
http://docs.oracle.com/javase/6/docs/technotes/guides/apt/index.html

28. Java’s Annotation Processing Tool (apt):
apt is a [..] utility for annotation processing. It includes a set
of reflective APIs [..] to process program annotations[..].
These [..] APIs provide a build-time, source-based, read-only
view of program structure. They [..] model the Java™
programming language's type system[..].
[..] annotation processors [..] can produce new source code
and other files. [..]
http://docs.oracle.com/javase/6/docs/technotes/guides/apt/index.html

29. Java’s Annotation Processing Tool (apt):
apt is a [..] utility for annotation processing. It includes a set
of reflective APIs [..] to process program annotations[..].
These [..] APIs provide a build-time, source-based, read-only
view of program structure. They [..] model the Java™
programming language's type system[..].
[..] annotation processors [..] can produce new source code
and other files. [..]
http://docs.oracle.com/javase/6/docs/technotes/guides/apt/index.html

30. Java’s Annotation Processing Tool (apt):
apt is a [..] utility for annotation processing. It includes a set
of reflective APIs [..] to process program annotations[..].
These [..] APIs provide a build-time, source-based, read-only
view of program structure. They [..] model the Java™
programming language's type system[..].
[..] annotation processors [..] can produce new source code
and other files. [..]
http://docs.oracle.com/javase/6/docs/technotes/guides/apt/index.html

31. Active Annotations

32. Active Annotations
Participate in Compilation

33. Active Annotations
Participate in Compilation
Enhance Derived Java Code

34. Active Annotations
Participate in Compilation
Enhance Derived Java Code
Apply Domain-Specific Constraints

35. Demo

36. xtend-lang.org
@xtendlang
@szarnekow
Thank you!
(c) 2012 itemis AG