Java….rumours of my demise have been greatly exaggerated

Steve Dalton - @spidierefactor.com.au - codingbynumbers.com

Java =

Java the Language+

Java Virtual Machine (JVM)+

Java Community Process (JCP)

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

JVM

Linux JVM Options

For more see: http://en.wikipedia.org/wiki/List_of_Java_virtual_machines

something to watch....

Dalvik

Java the Language

First a bit of history...

Where did 20 years go?

1990Stealth Project Begins

(Patrick Naughton)

1991Renamed to Green Project

(+ James Gosling & Mike Sheridan)

1992

Green OS & Oak Language Demoed

1993Green FirstPerson project→

(set-top boxes)

1994

1995

Oak renamed to Java

1996

JDK 1.0 Released

1997JDK 1.1

Inner Classes, Java Beans, JDBC, RMI, Reflection

1998J2SE 1.2

Swing, JVM gets a JIT, CollectionsJCP established

1998

JDK 1.1 downloads pass 2 million

1999Java Platform 2 source released

J2EE 1.2J2ME

2000Apple support Java

J2SE 1.3Hotspot JVM, JavaSound, JNDI, JPDA

2001

J2EE 1.3

2002J2SE 1.4

Regex, better exceptions, IPV6, logging, JAXP, Security, Web Start, Prefs

2003

J2EE 1.4

2004J2SE 5

Generics, Annotations, Autoboxing, Enums, Varargs, ForEach, Static Imports, Concurrency,

2005

2006Java SE 6

Scripting Language, PERFORMANCE + Lots of JVM improvements

Java SE7 Project beginsJEE 5

OpenJDK announced

2007JavaFX announced

Compiler and JavaFX Script Open Sourced

2008

JavaFX Platform 1.0

2009JavaFX 1.1JavaFX 1.2

JEE 6Oracle/Sun Merger

2010Revised Java roadmap announcedLot's of Java 7 features dropped

JavaFX Script droppedQuickly forked into Visage

Oracle sue Google over Dalvik/AndroidApple deprecate Java in OSX

bad press...then donate it to OpenJDK!IBM move to OpenJDK

JCP Madness!

2011?Java 7

Invoke Dynamic, Project Coin, Concurrency & Collections updates, NIO 2

Java FX 2

2012?Java 8

Invoke Dynamic, Project Coin, Concurrency & Collections updates, NIO 2

???

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

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

???

Why do I develop on this platform?

However, community finds a way...

Many Java Language Alternatives on JVM

CanonicalPorted

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

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

● Dynamic● Lisp dialect● Functional● REPL for simple

interactive programming

● Concurrency baked in● Compojure, Ring,

Leiningen

Clojure

Ports

…and many more● jaskell● jsqueak● mirah● noop● jacl● frink

Or even make your own Domain Specific Language!

Java the Community

IDEs

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

JOSS

Web Frameworks

JOSS in the “Enterprise”

Java Community Process (JCP)

Java Specification Requests (JSR) – over 300

JSR = Ref Implementation (with Source) + Technology Compatibility Kit (TCK)

JCP Executive Committee Votes

Sounds ok – what's the problem?

So... where are we heading?

JVM is a still rock solid platformToolset is still pretty awesome

Java community still very strongDoubts about language – COBOL of our time?

WTF are Oracle doing???

Steve's PredictionsJCP 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 everyoneClojure...niche, but could be HUGE

Might see some forksBut all depends on dreaded Software Patents.

Google GO for Android?

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