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  • Can't we all just get along?

    Android is client Java

  • Tablet devices, and mobile devices in

    general, are revolutionizing IT

  • It is practical to treat Android's Java

    runtime environment as separate from


  • When we sayAndroid is client

    Javathat is a more-general statement than, say,

    Objective-C is a mainstream language

  • Client Java was...AWT


    JavaFXQt bindings


  • Step1: Write once, run everywhereStep 2: Convince everyone this is a

    good ideaStep 3: ?????

  • Step1: Make a really appropriate mobile managed language

    runtimeStep 2: Watch ISVs write 200,000+ apps

  • I'm good enough, I'm

    smart enough, and doggone it, people like


  • The recipe for modern smartphone OSs:

    Linux or other embedded UNIX-like OS

    Managed language runtime

    Full-featured browser

  • Examples:iOS

    AndroidWindows Phone

  • Partial:Meego more like Linux-goes-mobile

    Bada C++ app runtime and APIs

  • Android is client Java

  • Real multi-processing multiple VM instancesLow memory overhead

    per instanceFast launch

  • Share-able data heap copy-on-write

    Save/restore component and process state

  • Security benefits from true multi-processingProcess per app

    UID per publisherEffective sandboxing of

    multiple publishers

  • VM efficiency for mobile

    Smaller bytecodeFaster bytecode

  • Mobile-tuned JIT compilerMuch less CPU/power-

    intensive than previous JIT compilers

    Compiles much less codeRelies on efficiency of non-

    compiled code

  • Android is a really good, mature client

    Java, and far ahead of other managed

    language runtimes for mobile devices

  • 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?

  • Why?

  • Here comes another guy prophesying the

    end of the PC era

  • Source: Hitslink


  • Why believe it this time?

  • The dominance of PCs in IT is artificialPCs were...

    Personal you own itA revolution

    Empowering to individuals

  • Some people need PCs

    Some people need this stove

  • So why did all the alternatives fail?

  • The economics of PC manufacturing crushed

    all challengersTablets are large

    smartphones - they inherit the economics of


  • Tablets and touch make everything easier Cheaper

    to supportTablets can support

    legacy apps through desktop virtualization

    Tablets are a great delivery vehicle for Web


  • A new revolution in enterprise

    collaboration and communication

  • To sum up

  • Java is a good languageAndroid Java is the best

    managed language runtime for mobile


  • Tablets are an IT revolutionTablets will become the

    basis of a new collaborative work and

    communications paradigmJava can be a big part of

    this revolution

  • 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

  • Learn Android Java

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