The Java Platform has had a rocky year with the acquisition of Sun by Oracle and unfortunate bickering about language release schedules and licensing emerging. Despite all of this the community is strong and extremely innovative use of the platform continues at a great pace. This talk will cover some of the JVM options available to developers on the Linux platform along with a introduction to the myriad of alternative languages available, some you will have definitely heard of and some not. I will also give an executive summary of the political side of Java and where I believe the platform is heading.

1. Java….rumours of my demise have been
greatly exaggerated
Steve Dalton - @spidie
refactor.com.au - codingbynumbers.com

2. Java =
Java the Language
+
Java Virtual Machine (JVM)
+
Java Community Process (JCP)

3. Java is dead, long live Java
JVM.... NO!
Java the language.... Maybe
JCP.... Probably
Yes, I know I'm starting with a conclusion here...
move along

4. JVM

5. Linux JVM Options
For more see: http://en.wikipedia.org/wiki/List_of_Java_virtual_machines

6. something to watch....
Dalvik

7. Java the
Language

8. First a bit of history...
Where did 20 years go?

9. 1990
Stealth Project Begins
(Patrick Naughton)

10. 1991
Renamed to Green Project
(+ James Gosling & Mike Sheridan)

11. 1992
Green OS & Oak Language Demoed

12. 1993
Green → FirstPerson project
(set-top boxes)

13. 1994

14. 1995
Oak renamed to Java

15. 1996
JDK 1.0 Released

16. 1997
JDK 1.1
Inner Classes, Java Beans, JDBC, RMI, Reflection

17. 1998
J2SE 1.2
Swing, JVM gets a JIT, Collections
JCP established

18. 1998
JDK 1.1 downloads pass 2 million

19. 1999
Java Platform 2 source released
J2EE 1.2
J2ME

20. 2000
Apple support Java
J2SE 1.3
Hotspot JVM, JavaSound, JNDI, JPDA

21. 2001
J2EE 1.3

22. 2002
J2SE 1.4
Regex, better exceptions, IPV6, logging, JAXP,
Security, Web Start, Prefs

23. 2003
J2EE 1.4

24. 2004
J2SE 5
Generics, Annotations, Autoboxing, Enums,
Varargs, ForEach, Static Imports, Concurrency,

25. 2005

26. 2006
Java SE 6
Scripting Language, PERFORMANCE + Lots of
JVM improvements
Java SE7 Project begins
JEE 5
OpenJDK announced

27. 2007
JavaFX announced
Compiler and JavaFX Script Open Sourced

28. 2008
JavaFX Platform 1.0

29. 2009
JavaFX 1.1
JavaFX 1.2
JEE 6
Oracle/Sun Merger

30. 2010
Revised Java roadmap announced
Lot's of Java 7 features dropped
JavaFX Script dropped
Quickly forked into Visage
Oracle sue Google over Dalvik/Android
Apple deprecate Java in OSX
bad press...then donate it to OpenJDK!
IBM move to OpenJDK
JCP Madness!

31. 2011?
Java 7
Invoke Dynamic, Project Coin, Concurrency &
Collections updates, NIO 2
Java FX 2

32. 2012?
Java 8
Invoke Dynamic, Project Coin, Concurrency &
Collections updates, NIO 2

33. ???
Steve's confidence level in Java the language
low....

34. Java lang innovation
just not happening
●
Generics caused a lot of confusion
●
Closures in Java 7 fiasco
●
Meanwhile
●
dotnet moves on
●
Rise of Dynamic languages
●
Functional Programming back with a
vengeance

35. ???
Why do I develop on this platform?

36. However, community
finds a way...
Many Java Language Alternatives on JVM
Canonical
Ported

37. ● Super Java
● Dynamically Typed
● Clear migration path
● Well established
● Closures, DSLs & Builders
● Groovy++ makes it static

38. ● Statically Typed
● Functional or Imperative (you chose)
● Concurrency built in (actor model)
● Twitter and Foursquare big users
● Lift Framework for web apps

39. ●
Dynamic
●
Lisp dialect
●
Functional
●
REPL for simple
interactive
programming
Clojure Concurrency baked in
●
●
Compojure, Ring,
Leiningen

40. Ports

41. …and many more
● jaskell
● jsqueak
● mirah
● noop
● jacl
● frink
Or even make your own Domain Specific
Language!

42. Java the
Community

43. IDEs
+ vim, emacs, gedit, geany and every other
editor under the sun

44. JOSS

45. Web Frameworks

46. JOSS in the
“Enterprise”

47. Java Community
Process (JCP)
Java Specification Requests (JSR) – over 300
JSR = Ref Implementation (with Source) +
Technology Compatibility Kit (TCK)
JCP Executive Committee Votes

48. Sounds ok – what's the problem?

49. So... where are we
heading?
JVM is a still rock solid platform
Toolset is still pretty awesome
Java community still very strong
Doubts about language – COBOL of our time?
WTF are Oracle doing???

50. Steve's Predictions
JCP is dead
Java 7/8 will happen but will anyone care?
Groovy will replace Java for a lot of tasks
Scala will do well but not for everyone
Clojure...niche, but could be HUGE
Might see some forks
But all depends on dreaded Software Patents.
Google GO for Android?

51. http://codingbynumbers.com
also on iTunes (sorry RMS!)
Attribution:
http://www.flickr.com/photos/minifig/3186925111/