Android uses a Java runtime environment that is optimized for mobile devices. Tablets and mobile devices are revolutionizing IT by providing an easier and more collaborative way for users to work and communicate. Android's Java runtime is well-suited for mobile applications due to its efficiency and security features like process isolation. While Android will continue growing in popularity, its Java runtime can potentially run separately from the Android operating system on other platforms if desired.

4. Android is client Java
Can't we all just get along?

5. Tablet devices, and
mobile devices in
general, are
revolutionizing IT

6. It is practical to treat
Android's Java
runtime environment
as separate from
Android

7. When we say
“Android is client
Java”
that is a more-general
statement than, say,
“Objective-C is a
mainstream language”

8. Client Java was...
AWT
Swing
SWT
JavaFX
Qt bindings
Etc.

9. Step1: “Write once,
run everywhere”
Step 2: Convince
everyone this is a
good idea
Step 3: ?????

10. Step1: Make a really
appropriate mobile
managed language
runtime
Step 2: Watch ISVs
write 200,000+ apps

11. I'm good
enough, I'm
smart
enough, and
doggone it,
people like
me!

12. The recipe for modern
smartphone OSs:
Linux or other
embedded UNIX-like OS
Managed language
runtime
Full-featured browser

13. Examples:
iOS
Android
Windows Phone

14. Partial:
Meego – more like
Linux-goes-mobile
Bada – C++ app
runtime and APIs

15. Android is client Java

16. Real multi-processing –
multiple VM instances
Low memory overhead
per instance
Fast launch

17. Share-able data heap
– copy-on-write
Save/restore
component and
process state

18. Security benefits from true
multi-processing
Process per app
UID per publisher
Effective sandboxing of
multiple publishers

19. VM efficiency for
mobile
Smaller bytecode
Faster bytecode

20. Mobile-tuned JIT compiler
Much less CPU/power-
intensive than previous JIT
compilers
Compiles much less code
Relies on efficiency of non-
compiled code

21. Android is a really
good, mature client
Java, and far ahead of
other managed
language runtimes for
mobile devices

22. So it is reasonable to want
the Android application
runtion on another
platform, but can you get it
without diluting the
advantages with
virtualization, emulation,
hypervizors, etc?

24. Why?

26. Here comes another
guy prophesying the
end of the PC era

27. Plummeting!
Source: Hitslink

28. Why believe it this
time?

29. The dominance of PCs in IT
is artificial
PCs were...
Personal – you own it
A revolution
Empowering to individuals

30. Some people need
PCs
Some people need
this stove

33. So why did all the
alternatives fail?

34. The economics of PC
manufacturing crushed
all challengers
Tablets are “large
smartphones” - they
inherit the economics of
smartphones

35. Tablets and touch make
everything easier Cheaper
to support
Tablets can support
legacy apps through
desktop virtualization
Tablets are a great
delivery vehicle for Web
apps

36. A new revolution in
enterprise
collaboration and
communication

41. To sum up

42. Java is a good language
Android Java is the best
managed language
runtime for mobile
devices

43. Tablets are an IT revolution
Tablets will become the
basis of a new
collaborative work and
communications paradigm
Java can be a big part of
this revolution

44. There will be lots of
Android devices, but...
You can treat Android
as a runtime
separately from
Android OS, if you
need or want to

45. Learn Android Java