Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 1
May 09, 2015
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 1
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 2
Java Micro Edition (ME) 8 Deep Dive Mar 28, 2014
Terrence Barr Senior Technologist & Principal Product Manager Java Embedded and Internet of Things Oracle
Copyright © 2014, 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 © 2014, Oracle and/or its affiliates. All rights reserved. 5
Agenda
§ The Rise of the Internet of Things § Java ME 8: Background and Overview § Java ME Connected Limited Device Configuration (CLDC) 8 § Java ME Embedded Profile (MEEP) 8 § Java ME 8 Security § Device I/O API (DIO) § Oracle Java ME Embedded 8 Product Information § Conclusion & Resources
Note: Java ME 8 is not final yet and information presented here is subject to change.
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 6
The Rise of the Internet of Things
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 © 2014, Oracle and/or its affiliates. All rights reserved. 8
IoT Everything
Huge Scale
Fragmentation
Access
Privacy
Security Cost
Time-to-Market
Communication
Interoperability
Resources Lifecycle
Reliability
Power
Management
Data Flow
Analytics
Touches Challenges
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 9
Healthcare Industrial Automation
Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 9
Home Automation
Smart Utilities
Automotive Telematics
Java Embedded Enables New IoT Services
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 10
The Path to New Services
Always-on connected to
variety of sensors and running
multiple software applications
Generates high-frequency
Fast Data analysis for instant decision
making and automation of
information flows
Enables customer service
differentiation from automated, real-
time responsiveness
Responsiveness Big Data
Intelligent Devices
Fueling New Services
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 11
Need for a Horizontal Services Platform Stop reinventing the plumbing!
Your Value-Add
Shift from proprietary point
solutions to
horizontal platforms and
infrastructure
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 12
The Full Picture: IoT is End-to-End Data & Control Flow, Security, Management, Integration
Event Processing
Data Management
Big Data Analytics
Integration
Spatial/GIS
CRM
Service
Billing
Industry Solutions
Intelligent System Application
Portal
UI
Sensing Device Concentrator or Gateway Network Cloud Intelligent Systems
Foundation Supporting Applications
Other Data Generating Sources such as Social
Media
Fixed Internet
2G, 3G, LTE, Satellite
NFC, Bluetooth, Zigbee, WLAN, DASH7 Fixed
Internet
Internet
Gateway
Network Abstraction
Protocol Gateway
Service Bus
Data Sync, Control, Feedback and Updates
Data Encryption, Device and Application Identity and Access Management
Base Stations Switches
Management Billing
Provisioning
Scalable Resilient Secure
Standards Based Managed Integrated
Value-Add Services
External Systems
Industry Specific core solutions and external/customer
systems
Any Device from Cameras, Smart Cards, Medical
Equipment, Consumer Goods,
Vehicles, Containers, Buildings.
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 13
Oracle’s Internet of Things Platform
ENGINEERED SYSTEMS, SERVERS & STORAGE
EVENT PROCESSING
JAVA EMBEDDED
SUITE
INDUSTRY APPLICATIONS
PARTNER INDUSTRY APPLICATIONS
BUSINESS APPLICATIONS
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 14
Why Java for IoT?
Software Updatability & Extended Lifecycle
Large Ecosystem & Pool of Resources
Reduced Time-to-Market, Reduced Risk
Software Portability & Increased Reach
Robust & Proven Technology
Standards-based, Trusted Vendor
Faster Innovation & Competitive Advantage
End-to-end Development Platform
Ease of Reuse and Back-End Integration
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 15
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 © 2014, Oracle and/or its affiliates. All rights reserved. 16
Java ME 8: Background and Overview
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 17
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 © 2014, Oracle and/or its affiliates. All rights reserved. 18
Java ME 8: Key Themes and Features
• Unifying Java Embedded ecosystem & unleashing innovation • Dedicated and optimized embedded software platform • Enable increased range of use cases and markets
Themes
Key Features
• Modern, flexible, standards-based software platform • Value-add new & enhanced features for embedded and wireless • Improved configurability and optimized footprint
• Target devices as low as at 128 KB RAM, 1 MB Flash/ROM (see note)
Target Markets
• Small to mid-embedded covering wide range of use cases/markets • Intelligent edge devices, communication nodes, healthcare
devices, smart sensors, smart meters, general IoT/M2M solutions
Next-Generation Software Platform for the Internet of Things
Note: MEEP 8 Minimal Profile Set, optimized for single-function devices. Actual footprint will vary based on target device and use case.
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 19
Quick Compare: Java ME 8 vs. CLDC 1.1 Feature Java ME 8 Java ME CLDC 1.1
Supported Standards CLDC 8 and MEEP 8 CLDC 1.1 (+ MIDP 2/IMP-NG)
Year of release 2014 2003
Java SE 8 alignment (language, APIs, VM) yes no
Service-enabled application platform yes no
Concurrent application execution yes no
Enhanced software provisioning and management yes no
Software modularization and re-use yes no
Scalable platform yes no
Dedicated embedded design yes no
Advanced security model and security services yes no
Advanced connectivity yes No
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 20
Java ME 8 Focus
Platform Footprint
Device CPU/ GPU/I-O
50KB-1MB
1MB-10MB
10MB-100MB Java ME Java SE
Java Card
ARM 7 - Cortex M - ARM9/11 - Cortex A - MIPS32 - PPC - Intel Atom
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 21
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
Use Case Software (e.g. smart pen)
Use Case Software (e.g. wireless module)
Use Case Software (e.g. control unit)
Use Case Software (e.g. smart meter)
Application Platform
Java ME Embedded Profile (MEEP) 8 (JSR 361)
On-Device I/O Access
Device I/O API
SATSA (JSR 177)
Security and Trust Services
Generic Connection Framework
GCF 8
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 22
Java ME 8: Top 10 Features
§ Alignment with Java SE platform § Designed for Embedded § Highly Portable and Scalable § Consistent Across Devices § Advanced Application Platform § Modularized Software Services § Multiple Client Domains (Device Partitioning) § Access to Peripheral Devices § Compatible to existing standard APIs § Dedicated Embedded Tooling
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 23
1: Aligned with Java SE 8
§ Java ME 8 is a major step towards alignment with Java SE 8 – Adds SE 8 language, libraries, and virtual machine features – Enables portability of code across the Java Platform,
from small to large – Unifying the development model: Enables 9 million Java
developers to target embedded space
§ Java ME 8 remains – Backward compatible to previous Java ME versions – Focused on resource-constrained devices
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 24
2: Designed for Embedded
§ Java ME 8 is purpose-built for connected embedded solutions
– Fully headless operation – Robust and secure application execution – Application monitoring and recovery – Remote software provisioning and
management – Versatile advanced connectivity, including popular
protocols and latest security standards such as TLS 1.2 – Power management framework
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 25
3: Highly Portable and Scalable
Platform Footprint
Device CPU/ GPU/I-O
50KB-1MB
1MB-10MB
10MB-100MB Java ME Java SE
Java Card
ARM 7 - Cortex M - ARM9/11 - Cortex A - MIPS32 - PPC - Intel Atom
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 26
4: Consistent Across Devices
§ Java ME 8 brings consistency to embedded platforms – Decouples applications from underlying fragmented
embedded hardware and software – Consistent Java APIs and functionality across devices
§ Enables creating embedded solutions efficiently – Create portable Java applications that scale across a
variety of devices with minimal effort – Replace or update target devices without rewriting – Instead of fighting complexity, focus on your business
value and reduce cost and time to market
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 27
5: Advanced Application Platform
§ Java ME 8 Multi-Application Model – Robust concurrent execution of
multiple applications
§ Enhanced Software Provisioning – Secure remote software provisioning and management,
including full application lifecycle control
§ Addresses requirements for many new embedded use cases – Enables remotely manageable and flexible software solutions – Reliable in-field software updates to deliver improvements, new
features, or to extend product life
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 28
6: Modularized Software Services
§ Multi-Application Model enables software modularization – Application logic can be partitioned into functional
modules running as individual services – Services collaborate to provide complete solution – Services can be developed, deployed, and
managed independently
§ Enables faster, more flexible software development and deployment – Increases agility in developing new functionality or updates – Allows generalization and reuse of services – Reduces footprint, deployment overhead, and time-to-market
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 29
7: Multiple Client Domains (“Partitioning”)
§ Java ME 8 supports multiple Client Domains on device (“Multi-Tenancy”)
– Example clients: ODM, service provider, system integrator, software developer
– Each client has its own security domain (policy, privileges, parameters)
– All software executes in the domain of its client with strict enforcement of security privileges and limitations
§ Enables secure sharing of a device by different clients as part of an embedded value chain
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 30
8: Access to Peripheral Devices
§ Device I/O API – Platform-neutral access to peripheral device hardware
directly from Java, no native coding involved – Allows easy support of use-case specific
peripherals, such as sensors, actuators, converters, etc
– Extensible for specialized devices – Supports a range of common I/O
§ GPIO, I2C, SPI, ADC, DAC, UART, AT Commands, Pulse counter, PWM, memory-mapped I/O, and more
§ Also planned for Java SE
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 31
9: Compatible with Standard APIs
§ Java ME 8 is designed to be compatible with established standards and APIs such as
– JSR 75 (File API) – JSR 120 (Wireless Messaging API) – JSR 172 (Web Services API) – JSR 177 (Security and Trust Services API) – JSR 179 (Location API) – JSR 280 (XML API) – and more …
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 32
10: Enhanced Embedded Tooling
§ Java ME 8 SDK – Tools and emulation for rapid development
of embedded Java ME applications – Includes device emulator, application
management interface, memory monitor, network monitor, and more
– Live code deployment and debugging on devices
§ NetBeans Plug-ins – Integration with Java ME SDK – Full-featured, integrated development
environment for embedded
Free Tools
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 33
General IoT and Machine-to-Machine (M2M) solutions
Smart Meters & Smart Sensors
Medical: eHealth & TeleHealth
Wireless Modules, Gateways, Connected Car
Industrial Control, Telemetry
Java ME 8 Example Use Cases Enabling products and services across different market segments
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 34
§ Modular & flexible § Complete development and prototyping
platform built around QSC6270T SoC § CPU, RAM/Flash, I/O, GPS, 3G, WiFi § Extensible through pluggable modules
§ Universal IoE/M2M platform § Quickly and easily start building advanced
IoE concepts with Java § Leverage Qualcomm and AT&T “Internet
of Everything” developer program
Qualcomm IoE Development Platform Java ME 8: 2nd Generation Java ME for Qualcomm IoE
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 35
§ Smart & small § Leverage existing compute resources § Small, connected, low power § Full Java application platform § Remote software provisioning and
management
§ Add intelligence and connectivity to vertical solutions § Industrial automation, healthcare,
security & monitoring, and more
Cinterion Wireless Modules Java ME 8: Coming to Gemalto Next-Generation M2M Product Range
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 36
l Raspberry Pi (Model B) l Broadcom BCM2835 (ARM1176JZF) SOC l 700 MHz, 512 MB RAM, Linux (Debian) l ~1 million devices sold, US $35
l Peripherals supported l Headless (no graphics) l Network (Ethernet TCP/IP), SD card (file) l Serial/UART l Devices attached via I2C, SPI, and GPIO
l Brings Java ME Embedded features to Raspberry Pi
Raspberry Pi Popular, low-cost board for development and educational use
GPIO, UART, I2C, SPI
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 37
Connected Microcontrollers A perfect use case for Java ME Embedded
§ Microcontrollers are becoming more powerful and better connected - On-chip memory is expanding to meet the needs of
Java ME Embedded - Enables cost effective, single-chip solutions with Java
§ Brings the benefits of Java to the microcontroller space - Platform-independence, efficient software
development, ability for in-field software updates, secure and robust software execution
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 38
Java ME Connected Limited Device Configuration (CLDC) 8 And Generic Connection Framework (GCF) 8
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 39
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 © 2014, Oracle and/or its affiliates. All rights reserved. 40
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 © 2014, Oracle and/or its affiliates. All rights reserved. 41
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 © 2014, Oracle and/or its affiliates. All rights reserved. 42
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, ListIterator Generics
• 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 © 2014, Oracle and/or its affiliates. All rights reserved. 43
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 © 2014, Oracle and/or its affiliates. All rights reserved. 44
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 © 2014, Oracle and/or its affiliates. All rights reserved. 45
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 © 2014, Oracle and/or its affiliates. All rights reserved. 46
Library Updates
§ New Collections – List – ArrayList, LinkedList – Map – HashMap, LinkedHashMap, WeakHashMap – Set – HashSet, LinkedHashSet – Queue – Deque, ArrayDeque – Iterable and Iterator, ListIterator
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 47
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 © 2014, Oracle and/or its affiliates. All rights reserved. 48
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 © 2014, Oracle and/or its affiliates. All rights reserved. 49
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 © 2014, Oracle and/or its affiliates. All rights reserved. 50
Unsupported Java SE 8 Features
§ Features not essential for small embedded use cases – keeping the VM complexity and footprint low
– 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 © 2014, Oracle and/or its affiliates. All rights reserved. 51
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 © 2014, Oracle and/or its affiliates. All rights reserved. 52
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 © 2014, Oracle and/or its affiliates. All rights reserved. 53
Generic Connection Framework (GCF)
CLDC
DatagramConnection ContentConnection
InputConnection OutputConnection StreamConnection
CLDC 8
SecureServerConnection SecureDatagramConnection
ModemConnection UDPMulticastConnection
CommConnection HttpConnection HttpsConnection
SecureConnection ServerSocketConnection
SocketConnection UDPDatagramConnection
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 54
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 © 2014, Oracle and/or its affiliates. All rights reserved. 55
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 © 2014, Oracle and/or its affiliates. All rights reserved. 56
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 © 2014, Oracle and/or its affiliates. All rights reserved. 57
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 © 2014, Oracle and/or its affiliates. All rights reserved. 58
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 © 2014, Oracle and/or its affiliates. All rights reserved. 59
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 © 2014, Oracle and/or its affiliates. All rights reserved. 60
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 © 2014, Oracle and/or its affiliates. All rights reserved. 61
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 – Receive connect/disconnect events – Selection of roaming/non-roaming
Selecting a Network Access Point
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 62
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 © 2014, Oracle and/or its affiliates. All rights reserved. 63
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 © 2014, Oracle and/or its affiliates. All rights reserved. 64
Java ME Embedded Profile (MEEP) 8
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 65
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/concurrent 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 © 2014, Oracle and/or its affiliates. All rights reserved. 66
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 © 2014, Oracle and/or its affiliates. All rights reserved. 67
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 – 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 © 2014, Oracle and/or its affiliates. All rights reserved. 68
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 (see notes 1, 2)
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 (see note 1)
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 (see note 1)
CLDC 8
Optional Package
Optional Package
Optional Package
Application(s)
MEEP 8 Standard Profile Set
MEEP 8 Minimal Profile Set
Optional JRSs
Optional APIs Notes:
1) Actual footprint will vary based on target device and use case. 2) MEEP 8 Minimal Profile Set, optimized for single-function devices.
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 69
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 © 2014, Oracle and/or its affiliates. All rights reserved. 70
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 © 2014, Oracle and/or its affiliates. All rights reserved. 71
MEEP 8 Application Platform A modern platform to build flexible, modular, and manageable 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 © 2014, Oracle and/or its affiliates. All rights reserved. 72
MEEP 8 Modularized Software Services
§ Multi-Application Model enables software modularization – Application logic can be partitioned into functional
modules running as individual services – Services collaborate to provide complete solution – Services can be developed, deployed, and
managed independently
§ Enables faster, more flexible development and deployment – Increases agility in developing new functionality or updates – Allows generalization and reuse of services – Reduces footprint, deployment overhead, and time-to-market
Flexible Software Design and Re-Use
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 73
MEEP 8 Software Provisioning & Management
Installation Mgmt install/update/remove & resolve dependencies
Lifecycle Mgmt start/stop/terminate &
prioritize
Provisioning download, authenticate,
verify
Security Policy Provider security policy &
permissions Storage
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 © 2014, Oracle and/or its affiliates. All rights reserved. 74
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 © 2014, Oracle and/or its affiliates. All rights reserved. 75
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 © 2014, Oracle and/or its affiliates. All rights reserved. 76
MID
let S
uite
1
MID
let S
uite
2
How does it work?
Simple example, Service Provider and Consumer are two different apps
MIDlet 2
LIBlet 2 MIDlet 1
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 77
How does it work? (cont)
Simple example, Service Provider and Consumer are two different apps
MID
let S
uite
1
MID
let S
uite
2
MIDlet 2
LIBlet 2 MIDlet 1
LIBlet2.jar/META-INF/services/com.example.CodecSet
LIBlet2.jar/META-INF/MANIFEST MIDletSuite1.jad
LIBlet-Services: com.example.CodecSet …
MIDlet-Dependency-1: service; required; com.example.CodecSet …
com.example.impl.StandardCodecs # Standard codecs
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 78
How does it work? (cont)
Simple example, Service Provider and Consumer are two different apps
MID
let S
uite
1
MID
let S
uite
2
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 © 2014, Oracle and/or its affiliates. All rights reserved. 79
Java ME 8 Security
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 80
Java ME 8 Security Overview
§ Trust Model – Authentication of client security domains and all associated software
components
§ Runtime Security – Sandboxed execution in a controlled environment with secure code
loading, verification, and strong data typing – Code authorization model enforces fine-grain permissions control for
access to resources and data
§ Security Services – Advanced Cryptography and Public Key Infrastructure (PKI) – Latest secure communication standards (TLS 1.2)
Comprehensive platform security
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 81
Java Runtime Execution Security
Example: File Access § All code execution is under direct
control of Virtual Machine § Access to resources and
functionality must be explicitly allowed
§ Permissions are checked at every access
§ All accidental or malicious access at any point is denied by Java runtime
Fine-grain Java SE Security Model and Permissions
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 82
Multiple Client Security Domains (“Partitioning”)
§ Java ME 8 supports multiple Client Security Domains on device (“Multi-Tenancy”)
– Example clients: ODM, service provider, system integrator, software developer
– Each client has its own security domain (policy, privileges, parameters)
– All software executes in the domain of its client with strict enforcement of security privileges and limitations
§ Enables secure sharing of a device by different clients as part of an embedded solution
Enabling the embedded software value chain
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 83
Multiple Client Security Domains: Example
CPU Designer
Solution Partner
Service Provider
System on Chip Vendor
(SOC) OEM/ODM Enterprise
Enabling a secure and robust software value chain
§ Each client can have their specific security domain and context, based on the deployment needs (e.g. permissions, credentials, settings)
§ Clients and associated software co-exist on the device, but are strictly separated
§ Software components collaborate through well-defined mechanisms to provide entire solution
Device
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 84
Device I/O API (DIO)
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 85
Access to Peripheral Devices
§ Device I/O API – Platform-neutral access to peripheral device hardware
directly from Java, no native coding involved – Allows easy support of use-case specific
peripherals, such as sensors, actuators, converters, etc
– Extensible for specialized devices – Supports a range of common I/O
§ GPIO, I2C, SPI, ADC, DAC, UART, AT Commands, Pulse counter, PWM, memory-mapped I/O, and more
– Also planned for Java SE
Extensible I/O directly from Java applications
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 86
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 © 2014, Oracle and/or its affiliates. All rights reserved. 87
Oracle Java ME Embedded 8 Product Information
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 88
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)
Oracle Java ME 8 Product Strategy An extensible, customizable embedded software platform
Oracle Java ME Embedded Product
Building Blocks (Oracle or partners): Services and/or Libraries (examples)
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 © 2014, Oracle and/or its affiliates. All rights reserved. 89
Designed for Small Embedded • Complete Java runtime optimized for low-
footprint ARM architecture devices • Portable, extensible architecture to address
diverse embedded requirements • Dedicated embedded features and APIs
Latest Java ME platform • Best-in-class multitasking VM • APIs to support connectivity, encryption,
location, and web services • Based on proven, widely-deployed
technology
Flexible, long-life services • Extend system life via remote software
update preserving system integrity and certification
• Cross-platform, modular applications • Distributed processing through Java end to
end
Best-in-class tool chain • Java ME SDK tools and emulation • Netbeans IDE support • Live, Java-level debugging on device
Oracle Java ME Embedded High-performance Java runtime for small embedded
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 90
Oracle Java ME Embedded 8 Stack A rich, flexible, portable embedded software platform
Legend: Oracle Unique Features
3rd Party Components Hardware (*) : Modifiable Components
CLDC 8 + Virtual Machine (JSR 360)
OEM Extension APIs *
Porting Layer *
Additional platform port(s) Win32 Emulation port * Reference Board ports *
GPIO SPI Network Serial
Advanced Tooling & Debugging
File I2C GPS ...
Embedded Application(s)
System Configuration
...
Device Operating System
Java ME SDK 8 Test, Emulate
NetBeans IDE Develop, Deploy,
Debug
Porting
Integration
Specialization
Device I/O API
Web Services JSR 172
File I/O JSR 75
XML JSR 280
Security & Trust JSR 177 subset
Messaging JSR 120
Location JSR 179
Robust Multi-tasking
Standardized Components
HTTP Client API
System Configuration API
MEEP 8 (JSR 361) Advanced Security
Enhanced Connectivity
Footprint Scalability
JSON API
OAuth 2.0 API
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 91
Included JSRs & APIs
API Description JSR 075 File I/O: Access to on-board file system(s) (SD card, etc)
JSR 120 Wireless Messaging 1.0: Send/receive SMS messages
JSR 172 Web Services: Basic XML processing, RPC, WSDL, SOAP
JSR 177 Security and Trust Services: Crypto
JSR 177 Security and Trust Services: APDU
JSR 179 Location: Access to location information
JSR 280 Enhanced XML processing, building on JSR 172
Device I/O Access to peripheral devices and hardware
JSON JSON processing
HTTP Client Advanced HTTP connections
OAuth 2.0 Industry-standard authentication protocol
System Configuration Read/write system configuration parameters
Rich API functionality for embedded solutions
Note: Not all JSRs are available on all platform (due to hardware limitations)
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 92
Dedicated Embedded Features
Feature Description Software Managent (SWM) API Remote app management (install, start, update, etc.)
SWM lifecycle notifications Application monitoring (e.g. errors, termination)
Robust software execution Application execution in resource-managed containers
Application autostart/auto-restart Autostart or restart applications
Device I/O API Enhanced access to peripherals from Java apps
AccessPoint API / Cellular API Support for multiple communication channels
Memory Monitor Monitor memory usage during development
Network Monitor Monitor network traffic during development
Headless On-Device Debug (ODD) Full source-level Java debugging
VM Configurator Remote configuration of VM
OEM Extensibility Product specialization through extension mechanism
Build Configuration Options Configure feature/footprint optimization for target use case
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 93
Comparing Java ME Embedded 8 to 3.x Java ME Embedded 8 Feature Benefit over Java ME Embedded 3.3/3.4
Java SE 8 alignment Unified development model - leverage Java SE 8 language, API, and virtual machine features for more efficient and highly portable code
Java ME 8 features Leverage the features of the Java ME 8 standard: • Enhanced service-enabled application platform • Increased software modularization and re-use • Enhanced software provisioning and management • Platform footprint optimization with “Right-Sizing” • Enhanced and expanded security model
Updated security services Latest standards for secure connectivity and encryption, such as TLS 1.2 and ECC
Enhanced connectivity Advanced cellular connectivity and improved networking functionality enables more flexible and intelligent connectivity
New value-add APIs RESTful web services and more
Improved platform portability, scalability and configurability
Enables easier porting, configuration, and footprint tuning of platform to address a wider range of devices and use cases
Improved tooling Alignment with Java SE development tools and flow and new and improved tooling functionality for more efficient development
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 94
l To Be Completed
Lower Costs with Oracle Java ME Embedded
Feature Cost Savings for Embedded System Productive and secure application platform Reduced development time and deployment costs
Pre-integrated, pre-tested runtime Reduced integration and testing costs
Cross-platform software Optimize hardware platform without software dependencies
Built-in features to support embedded use cases Reduced need to license 3rd party components
Local processing and business logic Lower data transmission and processing costs
Reduce hardware BOM costs Eliminate bulky operating systems and reduce system requirements
Java ecosystem expertise, tools, code Leverage ecosystem for quicker time to market
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 95
ME 8 GA Release Platform Support Platform Description Availability Emulation runtime for Windows 7
Complete product implementation for development on Windows desktops • Java ME Embedded runtime emulation • including I/O emulation and tooling
• Bundled with Java ME SDK 8 • Free download from Oracle
Technology Network (OTN) for evaluation
• OJPI source (Windows)
ARM11 on Linux Complete, ready-to-run implementation for Raspberry Pi (Model B) developer platform on Linux Debian Wheezy
• Free download from Oracle Technology Network (OTN) for evaluation
• Commercial binary • OJPI source (Linux/ARM)
ARM9 on Brew MP Complete, ready-to-run implementation for Qualcomm IoE developer platform on BrewMP • Including advanced wireless connectvity
• Free download from Oracle Technology Network (OTN) for evaluation
• Commercial binary • OJPI source (BrewMP/ARM)
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 96
Additional Platform Support Platform Description Availability Additional standard platforms • Oracle standard products for additional
platforms, such as ARM Cortex-M3/4 • Stay tuned
Other platforms • Other chip architectures • Other operating systems • Specialized features, hardware support,
etc.
• Available from Oracle as engineering services projects
• Check with Oracle partners
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 97
Conclusion & Resources
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 98
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 © 2014, Oracle and/or its affiliates. All rights reserved. 99
Java ME 8: Learn More
• Download Java ME 8 Early Access - oracle.com/technetwork/java/embedded/overview/javame/index.html
• Documentation for Java ME 8 – http://docs.oracle.com/javame/embedded/embedded.html
(see top of page for ME 8 content)
• Java 8 Central: - www.oracle.com/java8
• Follow me - Blog: terrencebarr.wordpress.com - Twitter: @terrencebarr
Youtube.com/java
blogs.oracle.com.com/java
Facebook.com/ilovejava
@java @javaembedded
Nighthacking.com
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 100
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.
Java Micro Edition (ME) 8 Deep Dive Mar 28, 2014
Terrence Barr Senior Technologist & Principal Product Manager Java Embedded and Internet of Things Oracle
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 102
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. 103