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Java Platform Standard Edition 7 Documentation What's New Documentation Release Notes Tutorials and Training The Java Tutorials Java Training More Information Java SE 7 Names and Versions Java SE White Papers Documentation Accessibility Specifications Installation Instructions Supported Systems Configurations Java SE 7 and JDK 7 Compatibility JDK 7 Adoption Guide Troubleshooting Java SE About Test / Sample Applications and Code Resources Oracle Java SE Advanced and Oracle Java SE Suite Open JDK Bugs Database Downloads Java SE Downloads Community Forums Blogs User Groups Wikis Newsletters Events Other Technologies Java EE Java ME Java FX GlassFish NetBeans Oracle has two products that implement Java Platform Standard Edition (Java SE) 7: Java SE Development Kit (JDK) 7 and Java SE Runtime Environment (JRE) 7. JDK 7 is a superset of JRE 7, and contains everything that is in JRE 7, plus tools such as the compilers and debuggers necessary for developing applets and applications. JRE 7 provides the libraries, the Java Virtual Machine (JVM), and other components to run applets and applications written in the Java programming language. The following conceptual diagram illustrates Java component technologies: JDK Java Language Java Language ` Tools & Tool APIs java javac javadoc jar javap JPDA JConsole Java VisualVM Java DB Security Int'l RMI IDL Deploy Monitoring Troubleshoot Scripting JVM TI JRE RIAs Java Web Start Applet / Java Plug-in User Interface Toolkits AWT Swing Java 2D Accessibility Drag n Drop Input Methods Image I/O Print Service Sound Java SE API Integration Libraries IDL JDBC JNDI RMI RMI-IIOP Scripting Other Base Libraries Beans Int'l Support Input/Output JMX JNI Math Networking Override Mechanism Security Serialization Extension Mechanism XML JAXP lang and util Base Libraries lang and util Collections Concurrency Utilities JAR Logging Management Preferences API Ref Objects Reflection Regular Expressions Versioning Zip Instrumentation Java Virtual Machine Java HotSpot Client and Server VM Description of Java Conceptual Diagram What's New in Documentation Documentation is regularly updated to provide developers with in-depth information about new features in the Java platform. Some recent updates include: Swing The JLayer class has been added, which is a flexible and powerful decorator for Swing components; see How to Decorate Components with JLayer. The Nimbus Look and Feel has been moved from the com.sun.java.swing package to the javax.swing package; see the javax.swing.plaf.nimbus package. Mixing Heavyweight and Lightweight Components is easier to accomplish. Windows with transparency and non-rectangular shape are supported; see How to Create Translucent and Shaped Windows An HSV tab has been added to the JColorChooser class. Java I/O The java.nio.file package and its related package, java.nio.file.attribute, provide comprehensive support for file I/O and for accessing the file system; see File I/O (featuring NIO.2). NIO stands for non-blocking I/O. The directory <Java home>/sample/nio/chatserver/ contains samples that demonstrate the new APIs contained in the java.nio.file package. The directory <Java home>/demo/nio/zipfs/ contains samples that demonstrate the NIO.2 NFS (Network File System) file system. Networking The URLClassLoader.close method has been added; see Closing a URLClassLoader. The Sockets Direct Protocol (SDP) provides access to high performance network connections; see Understanding the Sockets Direct Protocol. Security A new native provider has been added that provides several ECC-based algorithms (ECDSA/ECDH); see Sun PKCS#11 Provider's Supported Algorithms in Java PKCS#11 Reference Guide. Weak cryptographic algorithms can now be disabled; see Appendix D: Disabling Cryptographic Algorithms in Java PKI Programmer's Guide and Disabled Cryptographic Algorithms in Java Secure Socket Extension (JSSE) Reference Guide. Various enhancements related to SSL/TLS have been added to Java Secure Socket Extension. Collections The TransferQueue interface has been added, which is a refinement of the BlockingQueue interface. The class LinkedTransferQueue implements the TransferQueue interface. Concurrency The fork/join framework, which is based on the ForkJoinPool class, is an implementation of the Executor interface. It is designed to efficiently run a large number of tasks using a pool of worker threads. A work-stealing technique is used to keep all the worker threads busy, to take full advantage of multiple processors. See Fork/Join in The Java Tutorials. The directory <Java home>/sample/forkjoin/ contains samples that demonstrate the fork/join framework. The ThreadLocalRandom class eliminates contention among threads using pseudo-random numbers; see Concurrent Random Numbers. The Phaser class is a new synchronization barrier, similar to CyclicBarrier. Rich Internet Applications (RIA) and Deployment The window of a dragged applet can be decorated with a default or custom title; see Requesting and Customizing Applet Decoration in Draggable Applets. The following enhancements have been made to the syntax of JNLP files; see JNLP File Syntax: The os attribute in the information and resources elements can now contain specific versions of Windows, such as Windows Vista or Windows 7. Applications can use the install attribute in the shortcut element to specify their desire to be installed. Installed applications are not removed when the Java Web Start cache is cleared, but can be explicitly removed using the Java Control Panel. Java Web Start applications can be deployed without specifying the codebase attribute; see Deploying Without Codebase A JNLP file can be embedded into an HTML page; see Embedding JNLP File in Applet Tag. You can check the status variable of the applet while it is loading to determine if the applet is ready to handle requests from JavaScript code; see Handling Initialization Status With Event Handlers. You now have control of the window decoration style and title of an applet launched from a shortcut or dragged out of the browser; see Requesting and Customizing Applet Decoration in Developing Draggable Applets. Java 2D A new XRender-based Java 2D rendering pipeline is supported for modern X11-based desktops, offering improved graphics performance; see the xrender flag in System Properties for Java 2D Technology. The JDK now enumerates and displays installed OpenType/CFF fonts through methods such as GraphicsEnvironment.getAvailableFontFamilyNames; these fonts are also recognized by the Font.createFont method. See Selecting a Font. The TextLayout class supports Tibetan script. libfontconfig, a font configuration API, is used to select fonts to use for the logical fonts for some implementations of Linux; see Fontconfig. Java XML This release contains Java API for XML Processing (JAXP) 1.4.5, supports Java Architecture for XML Binding (JAXB) 2.2.3, and supports Java API for XML Web Services (JAX-WS) 2.2.4. Internationalization Unicode 6.0.0 is supported; see Unicode in The Java Tutorials. The directory <Java home>/demo/jfc/Font2DTest/ contains samples that demonstrate Java support for Unicode 6.0. Java SE 7 can accommodate new currencies that are identified by their ISO 4217 codes; see the Currency class. java.lang Package Potential deadlocks were eliminated for multithreaded, non-hierarchically delegating custom class loaders; see Multithreaded Custom Class Loaders in Java SE 7. Java Programming Language The following enhancements have been added to the Java language: Binary Literals Underscores in Numeric Literals Strings in switch Statements Type Inference for Generic Instance Creation Improved Compiler Warnings and Errors When Using Non-Reifiable Formal Parameters with Varargs Methods The try-with-resources Statement Catching Multiple Exception Types and Rethrowing Exceptions with Improved Type Checking Java Virtual Machine Java Virtual Machine Support for Non-Java Languages: Java SE 7 introduces a new JVM instruction that simplifies the implementation of dynamically typed programming languages on the JVM. Garbage-First Collector is a server-style garbage collector that replaces the Concurrent Mark-Sweep Collector (CMS). Java HotSpot Virtual Machine Performance Enhancements JDBC 4.1 JDBC 4.1 introduces the following features: The ability to use a try-with-resources statement to automatically close resources of type Connection, ResultSet, and Statement; see Closing Connections in Processing SQL Statements. RowSet 1.1: The introduction of the RowSetFactory interface and the RowSetProvider class, which enable you to create all types of row sets supported by your JDBC driver; see Using the RowSetFactory Interface in Using JdbcRowSet Objects.

XTS子系统是OpenHarmony生态认证测试套件的集合，当前包括acts（application compatibility test suite）应用兼容性测试套件，后续会拓展dcts（device compatibility test suite）设备兼容性测试套件等。XTS子系统当前包括acts与tools软件包

The practice of programming is more than just writing code. Programmers must also assess tradeoffs, choose among design alternatives, debug and test, improveperformance, and maintain software written by themselves and others. At the same time, they must be concerned with issues like compatibility, robustness,and reliability, while meeting specifications. The Practice of Programming covers all these topics, and more. This book is full of practical advice and real-world examples in C, C++, lava, and a variety of special-purpose languages. It includes chapters on: debugging: finding bugs quickly and methodically testing: guaranteeing that software works correctly and reliably performance: making programs faster and more compact portability: ensuring that programs run everywhere without change design: balancing goals and constraints to decide which algorithms and data structures are best interfaces: using abstraction and information hiding to control the interactions between components style: writing code that works well and is a pleasure to read notation: choosing languages and tools that let the machine do more of the work

2013年最新版的强悍Unix版本Solaris 11.1系统文件，功能十分强大，不愧是真正血统的Unix系统！ Oracle Announces Availability of Oracle Solaris 11.1 and Oracle Solaris Cluster 4.1 Delivers Oracle Database and Java Enhancements, Expanded Mission Critical Cloud Management Capabilities and Advanced Platform Features Redwood Shores, Calif – October 26, 2012 News Facts Oracle today announced general availability of Oracle Solaris 11.1 and Oracle Solaris Cluster 4.1. Oracle Solaris 11 is the first cloud OS that allows customers to build large-scale enterprise-class Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS) clouds on a wide range of SPARC and x86 servers and Oracle engineered systems. Oracle Solaris Cluster 4.1 extends high availability and disaster recovery capabilities of Oracle Solaris and includes unique virtual cluster features supporting highly efficient application consolidation with best-in-class availability. Oracle Solaris 11 is already widely in production with thousands of customers with mission critical deployments across industries such as financial services, communications, healthcare, retail, public sector and media and entertainment. Read customer success stories about Oracle Solaris here. Oracle Solaris 11 is also gaining strong momentum among enterprise application vendors with hundreds of applications already qualified for Oracle Solaris Ready status through the Oracle PartnerNetwork (OPN). OPN members can develop, sell and implement their solutions on Oracle Solaris 11 and take advantage of specialized Oracle Solaris resources to expand their market reach. Customers and partners can quickly and safely upgrade to Oracle Solaris 11.1 using the built-in update tools and software repositories available with Oracle Solaris 11. Oracle will host a webcast on November 7, 2012 at 8 a.m. Pacific time on Oracle Solaris 11.1 and Oracle Solaris Cluster 4.1, featuring Markus Flierl, vice president, Oracle Solaris Engineering, Core Technology and Bill Nesheim, vice president, Oracle Solaris Engineering, Platform Software. Register here. This event will also include an interactive chat with core developers of Oracle Solaris and Oracle Solaris Cluster. New and Enhanced Features in Oracle Solaris 11.1 Oracle Solaris 11.1 increases the performance, availability and I/O throughput of the latest Oracle Database technology. A new, optimized shared memory interface between the Oracle Database and Oracle Solaris 11.1 provides 8x faster database startup and shutdown, as well as online resizing of the Oracle Database System Global Area (SGA). Oracle Solaris 11.1 introduces unique new capabilities for optimizing Oracle Database performance. Oracle Solaris 11.1 exposes Oracle Solaris DTrace I/O interfaces that allow an Oracle Database administrator to identify I/O outliers and subsequently isolate network or storage bottlenecks. A new Oracle Solaris DTrace plug-in for Oracle Java Mission Control to enable customers to profile Java applications on Oracle Solaris production systems. New cloud management features add to Oracle Solaris 11’s zero overhead built-in virtualization capabilities across system, network and storage resources, including expanded support for Software Defined Networks (SDN) with Edge Virtual Bridging enhancements, to maximize network resource utilization and manage bandwidth in cloud environments. New built-in memory predictor monitors application memory use and provides optimized memory page sizes and resource location to speed overall application performance. Support for an unprecedented 32 TB of RAM and thousands of CPUs unlocks the full potential of Oracle’s latest server systems. Oracle Solaris Cluster 4.1 Highlights New Oracle Solaris 10 Zone Clusters allow customers to consolidate mission critical Oracle Solaris 10 applications on Oracle Solaris 11 cloud environments. Expanded disaster recovery operations using Oracle’s Sun ZFS Storage Appliance services along with Oracle Solaris Cluster 4.1 to coordinate failover of applications and data to a remote disaster recovery site. Faster application recovery with improved storage failure detection and resource dependencies management. New labeled security capability in Oracle Solaris Zone Clusters provides military grade application separation in highly consolidated mission-critical deployments using Oracle Solaris 11 Trusted Extensions. Integrated Oracle Deployments and Support Oracle Enterprise Manager Ops Center provides comprehensive cloud management capabilities for Oracle Solaris 11, including self-service provisioning of Oracle Solaris 11 Zones. Ops Center’s integrated systems management delivers enterprise scale cloud performance. Oracle Enterprise Manager Ops Center is available to Oracle Solaris customers at no additional cost under the Ops Center Everywhere Program. Oracle Solaris Studio delivers the latest in compiler optimizations, multithread performance and powerful analysis tools for native development, and optimized application performance and reliability on Oracle Solaris 11.1 systems. Oracle Solaris 11 guarantees binary compatibility with previous Oracle Solaris versions through the Oracle Solaris Binary Application Guarantee Program, which provides customers a seamless upgrade path and the industry’s best investment protection. Oracle Solaris Legacy Containers allows older Oracle Solaris environments to be brought forward onto latest generation hardware to provide power, cooling and footprint consolidation savings. OPN members can find Oracle Solaris tools and resources in the Oracle Solaris Knowledge Zone, including Oracle Solaris Ready, Oracle Solaris 11 Specialization and Oracle Solaris Development Initiative. The Oracle Solaris Remote Lab now provides a secure cloud environment for OPN members to test and validate their applications with Oracle Solaris 11 in SPARC and x86 virtual environments. Supporting Quotes “Oracle recommends Oracle Solaris 11 for all UNIX®-based Oracle implementations. Oracle Solaris 11.1 delivers over 300 new performance and feature enhancements and is engineered together with Oracle Database, middleware, applications to increase performance, streamline management and automate support for Oracle deployments,” said John Fowler, executive vice president, Systems, Oracle. “The combination of the secure, highly available capabilities of Oracle Solaris Cluster 4.1 and the built-in virtualization of Oracle Solaris 11.1 helps customers bring their most mission-critical applications into a cost effective, agile cloud environment and delivers extreme availability for enterprise applications.” “Clients are looking for ways to reduce the complexity of systems management while enabling Platform as a Service (PaaS) & Software as a Service (SaaS) clouds,” says Lee Diamante, solutions architect, Systems Computing Solutions at Forsythe. “The value of Oracle Solaris 11 is that it maintains all the enterprise-class features expected with a mission-critical OS, while bringing in new, innovative technologies. Forsythe has a long and rich history of delivering customer solutions on Oracle Solaris systems. This is why we are excited about the Solaris 11.1 release.” “Oracle is making it much easier for partners like Informatica to gain access to their software with the new testing environments; shrinking the time to measurable results and value,” said Julie Lockner, vice president, ILM, Informatica. “With the release of Oracle Solaris 11.1 Informatica customers now have access to mission critical deployments across major industries, with an environment of high performance and high availability. With all the new feature enhancements, we look forward to making the Informatica Platform certified on the Oracle Solaris 11 product family.”

The Table of Contents Each bullet shown below represents a chapter. Use the search field in the nav bar to search all of the CommonsWare books to see what they hold! Key Android Concepts Choosing Your Development Toolchain Tutorial #1 - Installing the Tools Android and Projects Tutorial #2 - Creating a Stub Project Getting Around Android Studio Contents of Android Projects Introducing Gradle and the Manifest Tutorial #3 - Manifest Changes Some Words About Resources Icons Tutorial #4 - Adjusting Our Resources The Theory of Widgets The Android User Interface Basic Widgets Debugging Your App The Classic Container Classes Other Common Widgets and Containers Tutorial #5 - Creating a Layout GUI Building, Continued AdapterViews and Adapters The WebView Widget Defining and Using Styles Dependencies Tutorial #6 - Adding a Library Introducing ConstraintLayout RecyclerView The Action Bar Vector Drawables Tutorial #7 - Setting Up the Action Bar Android’s Process Model Activities and Their Lifecycles Tutorial #8 - Setting Up An Activity The Tactics of Fragments Tutorial #9 - Starting Our Fragments Swiping with ViewPager Tutorial #10 - Rigging Up a ViewPager Resource Sets and Configurations Material Design Basics Dealing with Threads Requesting Permissions Assets, Files, and Data Parsing Tutorial #11 - Adding Simple Content Tutorial #12 - Displaying the Book Using Preferences Tutorial #13 - Using Some Preferences SQLite Databases Tutorial #14 - Saving Notes Internet Access Intents, Intent Filters Broadcasts and Broadcast Receivers Tutorial #15 - Sharing Your Notes Services and the Command Pattern Tutorial #16 - Updating the Book Tutorial #17 - Supporting Large Screens Backwards Compatibility Strategies and Tactics System Services Google Play Services Getting Help Working with Library Modules Gradle and Tasks Gradle Build Variants Manifest Merger Rules Signing Your App Distribution Writing a Gradle Plugin Code Generation Advanced Gradle for Android Tips Testing with JUnit4 Testin

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