Java DB Technical Documentation Java DB 10.10.1.2 Technical Documentation This documentation accompanies the version of Java DB that is included with Java Development Kit (JDK) 8. Getting Started with Java DB Java DB Reference Manual Java DB Developer's Guide Tuning Java DB Java DB Server and Administration Guide Java DB Tools and Utilities Guide Java DB 10.10.1.2 API Documentation Java DB 10.8.3.0 Technical Documentation This documentation accompanies the version of Java DB that is included with Java Development Kit (JDK) 7. Java DB 10.8.3.0 API Documentation Previous Java DB Releases Java DB 10.6.2.1 Documentation Java DB 10.6.2.1 API Documentation Java DB 10.6.1.0 Documentation Java DB 10.6.1.0 API Documentation Java DB 10.5.3.0 Documentation Java DB 10.5.3.0 API Documentation Java DB 10.5.1.1 Documentation Java DB 10.5.1.1 API Documentation Java DB 10.4.2.1 Documentation Java DB 10.4.2.1 API Documentation Java DB 10.4.1.3 Documentation Java DB 10.4.1.3 API Documentation Java DB 10.3.3.0 Documentation Java DB 10.3.3.0 API Documentation
IDE - JavaFX Click image for fullscreen preview JavaFX is the next step in the evolution of Java as a rich client platform. It is designed to provide a lightweight, hardware-accelerated Java UI platform for enterprise business applications. With JavaFX, developers can create JavaFX applications completely in the Java programming language using standard Java development tools. You can access native system capabilities, or seamlessly connect to server-based middleware applications. Templates and GUI Editing NetBeans IDE gives you skeleton JavaFX applications in the form of project templates. Via the NetBeans Options window, you can register the Scene Builder so that FXML files will automatically be opened into it. Getting Started With JavaFX Scene Builder with NetBeans IDE FXML Editor The IDE provides an XML editor with support for FXML, the XML-based declarative markup language for defining user interfaces in JavaFX applications. Deployment Tools Visual Debugger Using the Visual Debugger in NetBeans IDE
BNF Index of JAVA language grammar BNF Index of JAVA language grammar index on key wordsindex on special charactersrules of JAVA startrule nice to start [other languages BNF] for developper java developper java developper island java and mac index of rules Les applications web avec JavaFX Salut les amis ! J'ai décidé de me lancer dans le projet un peu fou de faire un big-tuto pour le site du zéro. C'est une grande première pour moi mais je suis par contre un grand lecteur des autres tutoriels du site, c'est même ici que j'ai acquis la majorité de mes connaissances en informatique J'ai décidé de vous faire un tutoriel sur une technologie qui, je pense, en intéressera plus d'un : JavaFX. En fait, JavaFX est une évolution de Java, elle permet de créer des RIA (Rich Internet Applications), c'est-à-dire des applications contenant des vidéos, de la musique, des effets graphiques très intéressants, etc. Pour commencer, je dois me confesser d'une faute grave que je vais commettre dans ce tutoriel : je ne vais pas partir de zéro... Non mais ça va pas !!! En fait, je demanderais aux lecteurs d'avoir une certaine connaissance du langage Java : savoir créer des variables, des fonctions, des classes, des objets... Voici quelques exemples d'applications web crées en JavaFX :
Using JavaCC options { UNICODE_INPUT = true; STATIC = false;} PARSER_BEGIN(Parser) package edu.lmu.cs.xlg.iki.syntax; import java.util.List;import java.util.ArrayList;import java.io.Reader;import edu.lmu.cs.xlg.util.Log;import edu.lmu.cs.xlg.iki.entities.Number;import edu.lmu.cs.xlg.iki.entities public class Parser { /** * Returns the result of parsing the Iki program on the given Reader. */ public Program parse(Log log) { try { return PROGRAM(); } catch (TokenMgrError e) { log.exception(e); return null; } catch (ParseException e) { log.exception(e); return null; } }} PARSER_END(Parser) // Whitespace and comments SKIP: { " " | "\t" | "\n" | "\r" | <"--" (~["\n","\r"])* ("\n"|"\r")>} // Reserved Words and symbols // Literals // Identifiers. Program PROGRAM(): { Block b;}{ "begin" b = BLOCK() "end" <EOF> {return new Program(b);}} Declaration DEC(): { Token i;}{ "var" i = <ID> {return new Variable(i.image);}}
JavaFX | Zen Java It’s fair to say my existing JavaFX Maven plugin code is downright ugly. A combination of trying to cover too much ground, knowing too little about Maven at the time, and having to work around all the horrible nasties in the current packaging tools led to a code base that was pretty much unusable. I’m pretty impressed that a few of you managed to contribute fixes and enhancements! I’ve been holding off fixing things however, as there were rumours that the JavaFX packaging guys were planning to significantly rework their tools, finally giving it the attention it desperately needs. Sadly, it seems that the packaging guys have again been dragged off into the land of tedious bug fixing. So I’ve given up waiting, and I’m now a good way through overhauling the JavaFX Maven plugin. I’ve just put up a a 2.0 alpha-release of the plugin. Below are the steps to needed to use the 2.0 snapshot release. Using the 2.0 Snapshot Release Add the Sonatype Snapshot repository to your POM: Continue Reading→
Java theory and practice: Introduction to nonblocking algorithms When more than one thread accesses a mutable variable, all threads must use synchronization, or else some very bad things can happen. The primary means of synchronization in the Java language is the synchronized keyword (also known as intrinsic locking), which enforces mutual exclusion and ensures that the actions of one thread executing a synchronized block are visible to other threads that later execute a synchronized block protected by the same lock. When used properly, intrinsic locking can make our programs thread-safe, but locking can be a relatively heavyweight operation when used to protect short code paths when threads frequently contend for the lock. In "Going atomic,"we looked at atomic variables, which provide atomic read-modify-write operations for safely updating shared variables without locks. A nonblocking counter Counter in Listing 1 is thread-safe, but the need to use a lock irks some developers because of the performance cost involved. Listing 1. Listing 2. Back to top
Java theory and practice: Stick a fork in it, Part 1 Hardware trends drive programming idioms Languages, libraries, and frameworks shape the way we write programs. Even though Alonzo Church showed in 1934 that all the known computational frameworks were equivalent in the set of programs they could represent, the set of programs that real programmers actually write is shaped by the idioms that the programming model — driven by languages, libraries, and frameworks — makes easy to express. In turn, the dominant hardware platforms of the day shape the way we create languages, libraries, and frameworks. As multiprocessor systems started to become cheaper, more applications needed to exploit the hardware parallelism they provided, and programmers found that writing concurrent programs using the low-level primitives provided by the language and class library was difficult and error-prone. Going forward, the hardware trend is clear; Moore's Law will not be delivering higher clock rates, but instead delivering more cores per chip. Listing 1.
Java theory and practice: Thread pools and work queues Why thread pools? Many server applications, such as Web servers, database servers, file servers, or mail servers, are oriented around processing a large number of short tasks that arrive from some remote source. A request arrives at the server in some manner, which might be through a network protocol (such as HTTP, FTP, or POP), through a JMS queue, or perhaps by polling a database. Regardless of how the request arrives, it is often the case in server applications that the processing of each individual task is short-lived and the number of requests is large. One simplistic model for building a server application would be to create a new thread each time a request arrives and service the request in the new thread. In addition to the overhead of creating and destroying threads, active threads consume system resources. A thread pool offers a solution to both the problem of thread life-cycle overhead and the problem of resource thrashing. Back to top Alternatives to thread pools Work queues
Tuning Garbage Collection with the 5.0 Java[tm] Virtual Machine Introduction The Java TM 2 Platform Standard Edition (J2SE TM platform) is used for a wide variety of applications from small applets on desktops to web services on large servers. In the J2SE platform version 1.4.2 there were four garbage collectors from which to choose but without an explicit choice by the user the serial garbage collector was always chosen. In version 5.0 the choice of the collector is based on the class of the machine on which the application is started. This “smarter choice” of the garbage collector is generally better but is not always the best. When does the choice of a garbage collector matter to the user? Amdahl observed that most workloads cannot be perfectly parallelized; some portion is always sequential and does not benefit from parallelism. The graph below models an ideal system that is perfectly scalable with the exception of garbage collection. The serial collector will be adequate for the majority of applications. Ergonomics for an application. Generations
java - the Java application launcher -client Select the Java HotSpot Client VM. A 64-bit capable jdk currently ignores this option and instead uses the Java HotSpot Server VM. For default VM selection, see Server-Class Machine Detection -server Select the Java HotSpot Server VM. -agentlib:libname[=options] Load native agent library libname, e.g. -agentlib:hprof -agentlib:jdwp=help -agentlib:hprof=help For more information, see JVMTI Agent Command Line Options. -agentpath:pathname[=options] Load a native agent library by full pathname. -classpath classpath -cp classpath Specify a list of directories, JAR archives, and ZIP archives to search for class files. If -classpath and -cp are not used and CLASSPATH is not set, the user class path consists of the current directory (.). As a special convenience, a class path element containing a basename of * is considered equivalent to specifying a list of all the files in the directory with the extension .jar or .JAR (a java program cannot tell the difference between the two invocations). -jar -?