• Share
  • Email
  • Embed
  • Like
  • Save
  • Private Content
Introduction to Java Micro Edition (ME) 8
 

Introduction to Java Micro Edition (ME) 8

on

  • 3,375 views

An introduction to Java ME 8, a modern, flexible, and robust software platform for intelligent devices and the Internet of Things.

An introduction to Java ME 8, a modern, flexible, and robust software platform for intelligent devices and the Internet of Things.

Statistics

Views

Total Views
3,375
Views on SlideShare
3,375
Embed Views
0

Actions

Likes
8
Downloads
104
Comments
0

0 Embeds 0

No embeds

Accessibility

Upload Details

Uploaded via as Adobe PDF

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

    Introduction to Java Micro Edition (ME) 8 Introduction to Java Micro Edition (ME) 8 Presentation Transcript

    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.1
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.2 Graphic Section Divider
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.3 Java Micro Edition (ME) 8 Introduction Terrence Barr Senior Technologist & Product Manager Oracle Sep, 2013
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.4 Safe Harbor Statement The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle s products remains at the sole discretion of Oracle.
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.5 Java ME 8: The Platform for the Internet of Things
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.6 Agenda §  The Rise of the Internet of Things: Drivers behind Java ME 8 §  Java ME 8: Background and Overview §  Java ME Connected Limited Device Configuration (CLDC) 8 §  Java ME Embedded Profile (MEEP) 8 §  Device I/O API (DIO) §  Conclusion and Call to Action Note: Java ME 8 is still under development and information presented here is subject to change.
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.7 The Rise of the Internet of Things: Drivers behind Java ME 8
    • x86 Architecture/ Windows OS Standards Based Hardware & Software Proprietary Hardware & Software 1960 - 1985 Host Era 2006 - 2025 Internet of Things 1985-2006 PC Era The 3rd IT Revolution
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.9 Challenges the Embedded Industry is facing •  Multitude and variety of devices •  Security, privacy, reliablity •  Remoteness, no human control •  Provisioning, management and monitoring •  Data flow and analytics •  Interoperability and standards Explosion of Devices: What’s keeping You awake at night? •  Long device lifecycle •  Connectivity, cost, infrastructure, bandwidth •  Device cost, power requirements •  Developer productivity •  Development cost, skill sets, re-use •  Time-to-market
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.10 Drivers behind Java ME 8 Requirement Description Modern embedded software platform •  Robust, secure, cross-platform software execution environment •  Modular software system and remote operation extends product value and reduced cost/risk •  Leverage feature-rich platform and focus on your value-add Efficient software development and deployment model •  Address the challenges of traditional embedded development •  Accelerate time-to-market •  Enable software portability and economies of scale •  Leverage large ecosystem of expertise and partners Increased market reach •  Platform “right-sizing” allows to address wide range of use cases and target markets with a single software model, from low- footprint devices to more powerful systems Open, based on standards, interoperable •  Avoid vendor lock-in •  Participate in and benefit from technology innovation •  Integratable with many industry standards Meeting the Challenges of the Internet of Things
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.11 Java ME 8: Background and Overview
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.12 Unifying the Java Ecosystem for Embedded •  Java ME 8 is the “little sibling” of Java SE 8 •  Portability of applications and libraries across the Java Platform •  Java ME vs. Java SE is a footprint/functionality tradeoff •  Java ME & Java SE release cycles are in sync Key Principles •  Modern and flexible platform for delivering embedded software •  Unified development experience & community across Java •  Aligned Java language, core APIs, development, and tools •  Enable 9+ Million Java developers to develop for Java Embedded Benefits Enabling Java Developers to be Embedded Developers
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.13 Java ME 8: Key Themes and Features •  Major step in Java ME Java SE alignment •  Dedicated and optimized embedded application platform •  Enable increased range of use cases and markets Themes Key Features •  Java ME CLDC 8: Updated VM + alignment with Java SE 8 •  Java ME Embedded Profile 8: Embedded Application Platform •  Value-add new and enhanced APIs and features for embedded •  Improved configurability and optimized footprint •  Target devices as low as at 128 KB RAM, 1 MB Flash/ROM Target Markets •  Small to mid-embedded covering wide range of use cases/markets •  Intelligent edge devices, communication nodes, healthcare devices, smart sensors, smart meters, other IoT/M2M solutions
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.14 Java ME 8 Focus Platform Footprint Device CPU/ GPU/I-OARM 7 Cortex M ARM9/11 MIPS32 - ARM Cortex A – PPC - Intel Atom 50KB-1MB 1MB-10MB 10MB-100MB Java ME Java SE Java Card
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.15 Java ME 8 Platform Overview Java VM Additional APIs (Examples) Java ME Connected Limited Device Configuration (CLDC) 8 (JSR 360) Additional Optional APIs On-Device I/O Access Vertical Specific APIs Location Messaging Wireless Communication Web Services Protocols and Data Conversion Sensors Additional Optional JSRs Security and Management Applications Applications Applications Applications Application Platform Java ME Embedded Profile (MEEP) 8 (JSR 361) On-Device I/O Access Device I/O API SATSA Security and Trust Services Generic Connection Framework GCF 8
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.16 Java ME 8: A Service-Enabled Platform Extend lifetime, flexibility, and value –  Create cross-platform, modular software applications –  In-field s/w upgrades while maintaining system integrity –  Reduce device certification and testing overhead Hardware Platform OS + Core Services Java ME 8 Platform Traditional Platform Java System Component Cloud (Network/ Enterprise) OS + Core Services Hardware Platform Native Application Loadable Applications and Services Limited flexibility, high cost –  H/W-S/W interdependencies –  Upgrade complexity –  Impact on security/integrity Bringing software modularity to resource-constrained systems
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.17 Embedded Application(s) Embedded Application(s) Virtual Machine Optional JSR System Controller Communication Management Device Management Tooling Agent Software Provisioning Identity Management Messaging Monitoring & Logging Data Store & Sync Web Server Other Services/ Protocols Graphics/UI Optional JSR Embedded Application(s) Java ME 8: Oracle Product Strategy An extensible, customizable application platform Oracle Java ME Embedded Product Building Blocks (Oracle or partners): Services and/or Libraries Oracle or 3rd Party JSRs 3rd Party Enhancement 3rd Party Enhancement 3rd Party Enhancements • Local Peripherals • IoT Network • Enterprise Note: Preliminary - Not all components shown are currently available Local or Network Interfaces
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.18 General IoT and Machine-to-Machine (M2M) solutions Smart Meters & Smart Sensors Medical: eHealth & TeleHealth Wireless Modules, Gateways Industrial Control, Telemetry Java ME 8 Example Use Cases Enabling products and services across different market segments
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.19 Tools – Developing Efficiently NetBeans + device emulation •  Java ME SDK –  Tools and emulation for rapid development of embedded Java ME applications •  NetBeans & Eclipse Plug-ins –  Integration with Java ME SDK –  Full-featured, integrated development environment for embedded •  Unified Development Experience –  Same development model across Java ME, Java SE, and Java EE Java ME SDK and IDEs Free Tools
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.20 Java ME Connected Limited Device Configuration (CLDC) 8 And Generic Connection Framework (GCF) 8
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.21 Java SE 8 •  Description -  CLDC 8 is an long-anticipated, evolutionary update for CLDC 1.1.1 to bring the VM, Java language and core API libraries in alignment with Java SE 8 •  Key Features -  Synchronize Java SE 8 language features into Java ME -  CLDC 8 is an extended strict subset of Java SE 8 -  Introduce developer-friendly Java SE APIs -  Includes updated Generic Connection Framework (GCF) 8 -  Virtual Machine update to align with Java SE developer tools -  Remain small and enable footprint optimizations -  Backward binary compatible CLDC 8 High-Level Overview CLDC 8 Bringing The World of Java SE to Java ME
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.22 CLDC 8 architecture CLDC 8 NIO files NIO channels Logging Compact Configuration NIO buffers java.lang java.io java.security java.util GCF 8 Multicast Secure Datagram Modem Connection HTTP HTTPS Socket Server Socket Datagram Java VM
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.23 Configurations The “CLDC Configuration” is the complete set of CLDC APIs Provides maximum functionality for applications Typical CLDC platform footprint is 1-2 MB ROM The CLDC Compact Configuration defines a subset for very small target platforms Omits Logging, NIO Files, and NIO Channels Tailored for very constrained devices (512 K ROM) CLDC is scalable to small and very small devices
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.24 Optimizing Footprint Even Further § “Stripping On Deployment” –  For fixed-function, minimal footprint deployments –  Allows bundling application with CLDC 8 runtime and then stripping away unnecessary components –  Result: Minimal, non-modifiable binary containing application and runtime
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.25 New Java Language Features • private void setInterval(int interval) { assert interval > 0 && interval <= 1000 : "Invalid value?”; } Assertions •  Added support for AbstractCollection, AbstractList, AbstractSet, Collection, Collections, Enumeration, Iterator, List, ListIteratorGenerics • void processList(Vector<String> list) { for (String item : list) { ... } Enhanced for Loop • Hashtable<Integer, String> data = new Hashtable<>(); void add(int id, String value) { data.put(id, value); } Autoboxing
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.26 New Java Language Features • enum Season {WINTER, SPRING, SUMMER, FALL}; private Season season; void setSeason(Season newSeason) { season = newSeason; Enumerations • void warning(String format, String... parameters) { for(String p : parameters) { process(p); } } Varargs • import static data.Constants.RATIO; ... double r = Math.cos(RATIO * theta); Static imports • SuppressWarnings, Deprecated, Override   @Deprecated public void clear(); • (JLS 7 section 9.6.3.2 @Retention - SOURCE retentions policy only.)   Annotations
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.27 New Java Language Features • switch (arg) { case "-data": ... case "-out": ... Strings in switches • long mask = 0xfff0_ff08_4fff_0fffl; byte flags = 0b01001111; Binary integral literals and underscores in numeric literals • catch (IOException | InterruptedException ex) { logger.log(ex); throw ex; Multi-catch and more precise rethrow • Hashtable<String, String> map = new Hashtable<>(); Improved Type Inference for Gen. Instance Creation (diamond) • try (DataInputStream is = new DataInputStream(...)){ return is.readDouble(); } Try-with-resources statement
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.28 Library Updates §  CLDC Library –  Platform extensibility via Service Providers (ServiceLoader) –  EventObject and EventListener –  Subset of NIO Buffers –  NIO Files and NIO Channels –  Logging –  StringBuilder and String Formatter –  Comparable interface –  Try with resources – Closeable and AutoCloseable
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.29 Library Updates §  New Collections –  List – ArrayList, LinkedList –  Map – HashMap, LinkedHashMap, WeakHashMap –  Set – HashSet, LinkedHashSet –  Queue – Deque, ArrayDeque –  Iterable and Iterator, ListIterator
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.30 Focus on: Service Providers §  A service is a well-known set of interfaces and abstract classes that is implemented by a (service) provider. §  Providers can be installed to extend the Java platform. §  Providers are located and instantiated on demand. §  Providers are identified via a provider-configuration file in the META-INF/services resource directory. An extension mechanism for the Java platform
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.31 Service Providers - Example import  com.XYZ.ServiceA;   ServiceLoader<ServiceA>  sl1=    ServiceLoader.load(ServiceA.class);     An extension mechanism for the Java platform ServiceB ServiceB Provider1 ServiceB Provider2 com.XYZ.ServiceA ServiceA Provider1 ServiceA Provider3 ServiceA Provider3 Resources: META-INF/services/com.XYZ.ServiceA: META-INF/services/ServiceB: ServiceAProvider1 ServiceAProvider2 ServiceAProvider3 ServiceBProvider1 ServiceBProvider2
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.32 Updates to CLDC Virtual Machine •  Target devices are not able to support InvokeDynamic •  No support for reflection or retention of runtime annotations CLDC 8 supports the Java VM Specification for SE 7 with some limitations •  For classfile versions 51 and 52 •  without a preverifier Verification by Type Checking •  For classfile versions 48 and older Legacy Verification (Preverifier)
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.33 Unsupported Java SE 8 Features §  No reflection §  No serialization §  No InvokeDynamic/Lambda expressions §  No JNI and application native code §  No User-defined class loaders §  No runtime annotations §  No thread groups and daemon threads §  No concurrency utilities §  Limited Math APIs (No BigDecimals) §  Limited security APIs §  Limited collection APIs (No sorted collection classes)
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.34 CLDC Summary Language Alignment with SE 8 VM Alignment with SE 8 Library Alignment with SE 8 Compact Configuration for very small devices GCF 8 to provides flexible networking Developer leverage to tools, APIs and knowledge
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.35 Generic Connection Framework (GCF) •  Consistent IPv6 support •  Generic ConnectionOption mechanism to parameterize connections •  Permissions apply per protocol •  Extended failure information via exceptions from java.net Consolidates GCF specification from CLDC, MIDP, CDC, and JSR 197 •  File support via StreamConnection •  IP Multicast •  Latest version of security protocols via TLS 1.2 •  Secure datagram connection via DTLS 1.2 •  Modem connection enhances CommConnection with control of hardware handshake New and enhanced protocols
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.36 Generic Connection Framework (GCF) CLDC DatagramConnection ContentConnection InputConnection OutputConnection StreamConnection CLDC 8 SecureServerConnection SecureDatagramConnection ModemConnection UDPMulticastConnection CommConnection HttpConnection HttpsConnection SecureConnection ServerSocketConnection SocketConnection UDPDatagramConnection
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.37 New GCF Features •  GCF consistently supports IPv6 addresses •  The value of the host field on Connector.open must be a symbolic hostname, an IPv4 address or an IPv6 address surrounded by square brackets ('[', ']’). •  datagram://[2001:db8::7]:4567 •  multicast://[FF0X::101]:4444 IPv6
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.38 New GCF Features •  GCF includes support for UDP Multicast •  1 to n communication of UDP datagrams •  Multicast is important for distributed services: Used for service announcement and discovery, media streaming •  Dynamic Discovery for configuration and rendezvous (mDNS, Bonjour) •  The new protocol class UDPMulticastConnection enables •  Client and server scenarios •  Joining multicast groups •  Creating a multicast server socket UDP Multicast
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.39 New GCF Features •  SecureConnection and SecureServerConnection support TLS 1.2 •  SecureServerConnection provides the server-side of a TLS connection •  Both can be parameterized to: •  Select a set of cipher suites •  Select a minimum protocol version •  Request client authentication TLS protocol enhancements
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.40 New GCF Features •  SecureDatagramConnection provides client-side support for DTLS •  It can be parameterized to: •  Select a set of cipher suites •  Select a minimum protocol version •  Request client authentication DTLS protocol support for TLS over UDP
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.41 New GCF Features •  Utility functions for name lookup, reverse name lookup and for testing the reachability of a host (ping): • getCanonicalHostName(String host) • isReachable(String host, int ttl, int timeout) • getByName(String host) NetworkUtilities
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.42 New GCF Features •  Purpose: monitor and control the signal lines of a serial interface •  Getter and setter for the line mode (input/output) •  Getter and setter for the line state •  Listener for changes to the state of an input line Modem Connection
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.43 New GCF Features •  Type-safe mechanism for protocol-specific additional parameters •  Useful for selecting access points, proxy settings, proprietary protocol extensions •  Multiple connection options can be used with varargs ConnectionOptions • ConnectionOption <String> keep = new ConnectionOption<> ("KeepAlive", "KEEP_ALIVE"); ConnectionOption <Integer> port = new ConnectionOption<>("ProxyPort", 80); Connection c = Connector.open(“my.server.com”, keep, port) Example Additional protocol parameters
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.44 New GCF Features: Access Point §  The AccessPoint API enables: –  Obtaining a list of available network access points –  Querying the access technology (e.g. 3GPP, CDMA, Wi-Fi, Wired) –  Getting Access-point technology-specific properties (e.g. 3GPP country code, network code) –  Selection of an access point for a connection –  Detection of connect/disconnect situations Selecting a Network Access Point
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.45 New GCF Features: Access Point AccessPoint  aps[]  =  AccessPoint.getAccessPoints(true);   AccessPoint  ap  =  aps[0];   //  attach  an  event  listener  to  the  first  access  point   ap.addListener(new  AccessPointListener()  {   public  void  notifyEvent(AccessPoint  accessPoint,  int  eventType)  {      if  ((eventType  ==  AccessPointListener.EVENT_TYPE_AVAILABLE))              System.out.println(“signalstrength  =  ”+  ap.getProperty(“signalstrength"));      }   });     //  select  the  first  access  point  for  communication   ConnectionOption<String>  id  =  new  ConnectionOption<>("AccessPoint”,  ap.getId());   Connection  c  =  Connector.open("http://www.oracle.com/index.html",  id);   Example
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.46 Development Tools for CLDC 8 §  Standard JDK 7 or 8 tools can be used for application development §  Embedded-specific hints & warning messages –  Provides developer with additional information to optimize code §  Debug structures are optional –  Debug features can be ignored/filtered out to save footprint §  Future tools under consideration may include –  Optimizing converter/compiler plugin for optimizing CLDC 8 applications §  Integrated with Java ME SDK and IDEs
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.47 Java ME Embedded Profile (MEEP) 8
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.48 MEEP 8 High-Level Overview § Description –  MEEP is an evolution of JSR 228 (IMP-NG), defining a modernized Java application platform with features and enhancements targeted at the small- and mid-range embedded market § Key Features –  Builds on CLDC 8 –  Robust and flexible multi-tasking application model –  “Services-enabled” application platform supports modular software design, deployment, and management –  Enhanced and flexible security model –  Improved configurability and optimized footprint for deployment The Evolution of Java ME for Embedded
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.49 MEEP 8 Key Features and Benefits A Modern Services-Enabled Software Platform for Embedded Feature Benefit Built on CLDC 8 Leverages CLDC 8 language features, APIs, and permissions model to align with Java SE 8 API Optionality and “Profile Sets” Enables “right-sizing” of platform to optimize footprint and reduce hardware requirements for specific target device Software Provisioning and Management Supports remote deployment, management, and monitoring of software components Support for Software Modularization Enables modular software development and deployment, reducing development effort, complexity, and footprint Support for advanced connectivity Supports a wide range of connectivity options, both wired and wireless, including advanced support for cellular Enhanced security model Enables implementation of use case-specific security policies for authentication and authorization
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.50 MEEP 8 Target Devices and Footprint § MEEP 8 is designed for “Right-Sizing” –  Well-defined optionality and modularity allows matching software features to deployment target footprint –  “Stripping on Deployment” allows further reduction for very small fixed- function targets –  Greatly expands the range of addressable use cases and devices § Target Device Categories –  Minimal Single-Function Device: Smallest possible footprint –  Standard Multi-Function Device: Expands with functional requirements –  Full Multi-Function Device: Full functionality, footprint not a concern Adressing New Market Opportunities
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.51 MEEP 8: Right-Sizing The Platform MEEP 8 Full Profile Set MEEP 8 Minimal Profile Set •  Mandatory core APIs, application model, application packaging Target Devices/Use Cases •  Very small devices (low cost/power/size) •  Single-function use cases (e.g. smart sensor) Minimum: •  128 kB RAM •  1 MB Flash Recommended: •  256 kB RAM •  2 MB Flash MEEP 8 Standard Profile Set •  Adds support for software services platform (multi-tasking, application mgmt, shared libs, events, enhanced security model, etc) •  Optional Packages as per use case Target Devices/Use Cases •  Mid-range MCU/low-end embedded systems •  Wide range of use cases (e.g. wireless module, industrial control system, remote monitoring device, smart network note, etc) Minimum: •  512 kB RAM •  2 MB Flash Recommended: •  1 MB RAM •  3 MB Flash MEEP 8 Full Profile Set •  All ME 8 functionality and Optional Packages Target Devices/Use Cases •  High-end MCU or mid-range embedded systems •  Use cases requiring full software functionality, footprint not a concern Minimum: •  2 MB RAM •  4 MB Flash CLDC 8 Optional Package Optional Package Optional Package Application(s) MEEP 8 Standard Profile Set MEEP 8 Minimal Profile Set Note: IMP-NG Compatible Profile Set Not Shown. Recommended: 1 MB RAM, 2 MB Flash Optional JRSs Optional APIs Note: All footprint numbers approximate and subject to change
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.52 Application or Service MEEP 8 MEEP 8 Architecture CLDC  8   javax. microedition. midlet New in MEEP 8 Updated in MEEP 8 javax. microedition. io (optional) javax. microedition. event (optional) javax. microedition. key (optional) javax. microedition. lui (optional) javax. microedition. media (optional) javax. microedition. power (optional) javax. microedition. rms (optional) javax. microedition. swm (optional) javax. microedition. cellular (optional) Application or Service Application or Service
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.53 Package Description javax.microedition.midlet The Application and the environment in which the application runs. javax.microedition.swm [OPTIONAL] Provides extended software management features to MEEP. javax.microedition.cellular [OPTIONAL] Provides classes to obtain information about cellular networks the device is registered on. javax.microedition.event [OPTIONAL] Events for system state changes and application to application communication. javax.microedition.power [OPTIONAL] Power management. javax.microedition.io [OPTIONAL] Networking support based on the Generic Connection Framework Specification. javax.microedition.lui [OPTIONAL] Set of features to implement Line-oriented User Interface. javax.microedition.key [OPTIONAL] Support of embedded device key input. javax.microedition.media [OPTIONAL] Features for Audio support on embedded Devices. javax.microedition.rms [OPTIONAL] Mechanism for applications to persistently store data and later retrieve it MEEP 8 API Packages
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.54 MEEP 8 Application Platform A modern platform to build flexible, modular, and managable software Component/concept Description Software provisioning Provision of applications and libraries, and management of dependencies Software management Control lifecycle of software components Application concurrency (MVM) Concurrent execution of multiple apps, in isolation Inter-application communication (IMC) Exchange data between applications (synchronous) Events Send/receive events across system (asynchronous) Service Provider/Consumer pattern Enable shared services and service consumers Shared Libraries (LIBlets) Share common code across applications
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.55 MEEP 8 Application Provisioning & Management Installation Mgmt install/update/remove & resolve dependencies Lifecycle Mgmt start/stop/terminate & prioritize Provisioning download, authenticate, verify Security Policy Provider security policy & permissionsStorage App-1 App Mgmt Agent Application Management System (AMS) Authentication Provider authenticate App-2 Java Runtime Uses API 2. Download 3. Authenticate (2) 4. Install 6. Access 7. Provide 8. Control 9. Secure 5. Store Application Package Deployment Infrastructure •  Identity •  Provisioning •  Security Policy •  Management 1. Implement protocol App Management Agent: •  Privileged application •  Implements deployment- specific protocol •  Manages local applications via AMS API 3. Authenticate (1) Client Device
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.56 Shareable Software Components §  A shareable software component that one or more applications MAY use at runtime §  Save static footprint size by enabling multiple application suites to share the same common code without packaging them redundantly §  Reduced download times for applications that declare dependencies on shared components §  Each shared library exposes a set of classes and resources to applications for their use just as if those classes and resources were originally packaged within the application JAR §  Different implementations of the same API can be can be accessed via the Service Provider/Consumer pattern Shared Libraries (LIBlets)
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.57 Service Provider/Consumer Pattern §  Service is a well known set of interfaces/abstract classes; Service Provider is an implementation of the service §  Enables consumers to use services by one or more providers §  Features of the Application Platform Framework –  Ability of apps, shared libraries, or runtime to declare it provides a service (provider) –  Ability of apps or shared libraries declare a dependency on a service (consumer) –  Ability of the AMS to bind a consumer to a provider, and rebind on updates –  Service provider executed in context of consumer (client application) §  Benefits –  Modular software design, increased reuse, easier updating, reduced testing, reduced footprint Based on Java SE ServiceLoader API
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.58 MIDletSuite1 MIDletSuite2 How does it work? Simple example, Service Provider and Consumer are two different apps MIDlet 2 LIBlet 2 MIDlet 1
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.59 How does it work? (cont) Simple example, Service Provider and Consumer are two different apps MIDletSuite1 MIDletSuite2 MIDlet 2 LIBlet 2 MIDlet 1 LIBlet2.jar/META-INF/services/com.example.CodecSet LIBlet2.jar/META-INF/MANIFESTMIDletSuite1.jad LIBlet-Services: com.example.CodecSet … MIDlet-Dependency-1: service; required; com.example.CodecSet … com.example.impl.StandardCodecs # Standard codecs
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.60 How does it work? (cont) Simple example, Service Provider and Consumer are two different apps MIDletSuite1 MIDletSuite2 class StandardCodecs class MIDlet1 MIDlet 2 LIBlet 2 MIDlet 1 public class StadardCodecs implements CodecSet { public StadardCodecs() { … } public Encoder getEncoder(String encodingName) { return new EncoderImpl(…); } } private static ServiceLoader<CodecSet> codecSetLoader = ServiceLoader.load(CodecSet.class); public static Encoder getEncoder(String encodingName) { for (CodecSet cp : codecSetLoader) { Encoder enc = cp.getEncoder(encodingName); if (enc != null) return enc; } return null; } Interface CodecSet public interface CodecSet { public Encoder getEncoder(String encodingName); public Decoder getDecoder(String encodingName); }
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.61 MEEP 8 Enhanced Security Model § “Clients” and Software Components –  Clients are entities with particular security privileges (similar to users or application vendors). Specialized clients are possible (e.g. “root client”). –  Software components are associated with clients and inherit their privileges –  Authentication of clients and software components can be use case- specific (e.g. specialized authentication scheme) § Security Privileges –  Priviledges are based on clients and expressed as fine-grain permissions –  Authorization (granting of permissions) can be use case-specific (e.g. networked authorization services) Flexibility to Support Specialized Security Scenarios
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.62 Device I/O API (DIO)
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.63 Device I/O API Overview Java VM Application Layer Application Environment CLDC Example 1 Real-Time Clock Peripheral Implementation (High Level Driver) Example 2 Simple GPIO Pin- based sensor reader (low level application) On-Device I/O Access Device I/O API •  Generic API to access devices in a platform-neutral manner •  ‘Late binding’ allows addition of new peripheral types without changing API •  Enables downstream support of use case-specific peripherals (non-real time) •  No native application code •  Also planned for availability on Java SE Access Peripheral I/O Hardware directly from Java applications
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.64 Device I/O API Features in ME 8 Peripheral Type Description Peripheral abstraction interface All access to peripherals via PeripheralManager (late binding) General Purpose Input/Output (GPIO) Access to buttons, switches, LEDs, etc. Inter-Integrated Circuit Bus (I2C) Access to I2C slaves (sensors, RTC, DAC/ADC, NVRAM, …) Serial Peripheral Interface Bus (SPI) Access to SPI slaves (audio devices, LCD screens, EEPROM/Flash, …) Analog/Digital conversion Access to ADC and DAC channels Universal Asynchronous Receiver/ Transmitter (UART) Access to UART serial communication and control Memory-Mapped Input/Output Access to devices with memory-mapped registers and memory blocks AT Command Interface Access to modems and devices supporting AT commands Watchdog Watchdog functionality to ensure reliable operation Pulse counter Access to pulse counter functionality Pulse Width Modulation (PWM) Access to pulse width modulation output
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.65 Conclusion Call to Action
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.66 Conclusion Aspect Benefit Modern Embedded Software Platform •  Java SE alignment enables unified ecosystem for Java Embedded expertise, reuse, and resources •  Modular software system and enhanced manageability accelerates time-to-market and extends product value at reduced cost/risk •  Enhanced and more flexible security model allows deployment- specific security infrastructure Increased Market Reach •  Platform “right-sizing” allows to address wide range of use cases and target markets with a single software model, from low-footprint devices to more powerful systems Open, based on standards, interoperable •  Avoid vendor lock-in •  Participate in and benefit from technology innovation •  Integratable with many industry standards Java ME 8: The Platform for the Internet of Things
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.67 Call To Action •  Java ME Embedded 8 Early Access Download it and try it out today! -  oracle.com/technetwork/java/embedded/overview/javame/index.html •  Learn more about Java ME 8 –  CLDC 8: jcp.org/en/jsr/detail?id=360 –  MEEP 8: jcp.org/en/jsr/detail?id=361 •  Follow me to keep abreast of Java Embedded -  terrencebarr.wordpress.com -  @terrencebarr
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.68 Safe Harbor Statement The preceding is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle s products remains at the sole discretion of Oracle.
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.69 Java Micro Edition (ME) 8 Introduction Terrence Barr Senior Technologist & Product Manager Oracle Sep, 2013
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.70 Graphic Section Divider
    • Copyright © 2013, Oracle and/or its affiliates. All rights reserved.71