com.google.gwt.gears.Gears
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Organize Projects - Google Web Toolkit - Google Code - 0 views
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two ways to approach loading them
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nclude each module with a separate <script> tag
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Create a top level module XML definition
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Compile the top level module
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the second approach will lead to much better end-user performance
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each module has to be downloaded separately by the end-user's browser
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each module will contain redundant copies of GWT library
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conflict with each other during event handling
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Linkers are divided into three categories, PRE, POST, and PRIMARY
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one primary linker is run for a compilation
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everal linkers are provided by Core.gwt.xml, which is automatically inherited by User.gwt.xml.
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monolithic JavaScript file.
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cross-site deployment model.
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standard iframe-based
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<add-linker name="xs" />
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The GWT compiler
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packaging its output with the Linker subsystem
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responsible for the final packaging of the JavaScript code
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providing a pluggable bootstrap mechanism
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re-use an existing Java API for a GWT project,
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<super-source>
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"re-root" a source path
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to emulate part of the JRE not implemented by GWT
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tells the compiler to add all subfolders of com/example/myproject/jre/
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to the source path
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com/google/myproject/gwt/jre/java/util/UUID.java
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most commonly used elements in the module XML file.
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<inherits name="
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herits all the settings from the specified module
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<entry-point class=
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Entry points are all compiled into a single codebase
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when the onModuleLoad() of your first entry point finishes, the next entry point is called immediately.
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Any number of entry-point classes can be added
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<source path="
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resources get copied into the output directory during a GWT compile.
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client subpackage is implicitly added to the source path
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<public path="path" />
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treated as a publicly-accessible resource.
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resources get copied into the output directory
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the public subpackage is implicitly added to the public
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<servlet
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For RPC, this element loads a servlet class
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mounted at the specified URL path
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path=
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class="
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URL path should be absolute
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@RemoteServiceRelativePath attribute
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you must configure a WEB-INF/web.xml in your war directory to load any servlets needed.
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n development mode,
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<script src="
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external JavaScrip
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<stylesheet src="
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Extends the set of values
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for an existing client property
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<replace-with-class>
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<generate-with-class>
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<when-property-is
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three different types of predicates are
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<when-type-assignable
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<when-type-is
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<all>
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<any>
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<none>
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GWT libraries are organized into modules
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you want to inherit at least the User module
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contains all the core GWT functionality
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including the EntryPoint class
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widgets and panels
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History feature
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Internationalization
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DOM programming, and more
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Low-level HTTP
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Use the following syntax to cause an external JavaScript file to be loaded
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before your module entry point is called.
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as if you had included it explicitly using the HTML <script
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loaded before your onModuleLoad() is called.
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all included scripts will be loaded when your application starts, in the order in which they are declared.
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associate external CSS files with your module
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GWT.getModuleBaseURL() + "foo.css" in client code
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module's public path
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useful when
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inheritance makes resource inclusion particularly convenient.
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If you wish to create a reusable library that relies upon particular stylesheets or JavaScript files, you can be sure that clients
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see the documentation for FileSet for a general overview
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<public>
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<super-source>
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<source>
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includes
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excludes
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defaultexcludes
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casesensitive
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By default, the patterns listed here are excluded.
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defaultexcludes is true
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<script src='myApp/myApp.nocache.js'></script>
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<script> tags always block evaluation of the page
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<img> tags do not block page evaluation
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two simultaneous connections
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The body.onload() event will only fire once all external resources are fetched, including images and frames.
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GWT selection script
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like a normal script tag
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but the compiled script will be fetched asynchronously.
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Parsing is blocked until externalScriptZero.js is done fetching and evaluating.
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myApp/myApp.nocache.js completes
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the compiled scrip
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(<hashname>.cache.html
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begins fetching in a hidden IFRAME (this is non-blocking).
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onModuleLoad() is not called yet, as we're still waiting on externalScriptOne.js
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body.onload() fires
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onload='alert("w00t!")
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put the GWT selection script as early as possible
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because it won't block any other script requests
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<img> tags are not guaranteed to be done loading when onModuleLoad() is called
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<script> tags are guaranteed to be done loading when onModuleLoad() is called
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multiple EntryPoints
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will all be called in sequence as soon as that module (and the outer document) is ready
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multiple GWT modules within the same page
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each module's EntryPoint will be called as soon as both that module and the outer document is ready
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EntryPoints are not guaranteed to fire at the same time
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or in the same order
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in which their selection scripts were specified in the host page
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Online Java Compiler and Java Editor Tool - 0 views
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Looking online free java compiler? Online Java compiler Tool provides the facility for java programmers to compile and run java program.
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Equinox Aspects - 0 views
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Aspect-oriented computing is continuing to increase in popularity. The modularity inherent in OSGi and Eclipse offers unique opportunities for managing and applying aspects by supplying them in bundles and directing their application to particular sets of bundles. This incubator work area is dedicated to delivering an integration of aspects and OSGi. The goal is to allow developers to use the Equinox together with AspectJ by combining the benefits of both worlds. Using a load-time weaving extension you are able to add AspectJ aspects to your bundle-based system just by putting them into general OSGi bundles. It does not matter if the pointcuts you defined inside the aspects contain join points that are defined by classes within the same bundle or any other bundle in your installation. The load-time weaving extension will take care that your aspects are woven with the appropriate classes at load-time. To illustrate this lets assume the following situation: You would like to write an aspect that traces something within the JDT plug-ins of Eclipse. Without some kind of load-time aspect weaving you would somehow need to recompile those JDT plug-ins using AJDT (for example) together with your aspect. By using the load-time aspect weaving extension all you need is to implement your aspect and add that bundle to your system. The load-time aspect weaving extension takes care of weaving your aspect with the JDT code as it is loaded. And it doesn't matter if a new JDT is installed by the user later on. The next time your application is started the load-time aspect weaving will take care of weaving your aspect into these bundles as well, if necessary. With this technology is becomes possible to modularize crosscutting concerns across different plug-ins while keeping the idea of separate compilation for bundles. Goals Provide Runtime Modularity and Versioning for Crosscutting Concerns: Aspects are used to implement crosscutting concerns. However such concerns usually compr
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Software site for a real programmer/coder. Compilers, libraries, setup makers, deCompilers, distribbution packers, ... Comprehensive categorization, ratings, comments, forums, RSS support. C, C++, Assembly, Basic, Pascal, C#, Java...
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Maven GWT Plugin - GWT Maven Plugin Usage - 0 views
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Link not valid; perhaps http://tomcat.apache.org/maven-plugin-2.0/context-goals.html#aStarting_a_WAR_project
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configure compilation for multiple modules
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automagically scan project source and resources directories for ''.gwt.xml'' module files
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JAnnocessor is a new open-source framework for powerful, flexible, yet easy processing ... - 0 views
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"JAnnocessor is a new open-source framework for powerful, flexible, yet easy processing of annotated Java code. Its main purpose is compile-time, annotation-driven source code generation in a declarative and customizable fashion. JAnnocessor is built on top of Java APT, encapsulating the Java source code model in a rich and convenient high-level domain model that serves as a good target for expressive matching and transformation. Finally, a template engine is used for customizable template-based source code generation. Having simplicity and productivity in mind, JAnnocessor has many useful features that make it enjoyable: smart imports organization, logging delegation, graphical UI for real-time debug, hot swap of processors and templates, as well as out-of-the-box common annotations, processors and templates."
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squill: Home - 2 views
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Squill is a slick internal DSL for writing SQL queries in pure Java. It uses the database metadata and generics to catch as many errors as possible during compilation and is almost completely typesafe. At the same time it is designed to allow everything SQL allows you to do, exactly the way SQL is meant to do it. This means that you're encouraged to select only the data you need and no hidden queries are generated for you, leaving you in full control of the query performance. Squill also supports database-specific extensions, allowing you to both use advanced features and fully tweak your queries.
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lambdaj is a library that manipulate collections in a pseudo-functional and statically ... - 0 views
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lambdaj is a library that makes easier to address this issue by allowing to manipulate collections in a pseudo-functional and statically typed way. In our experience to iterate over collection, especially in nested loops, is often error prone and makes the code less readable. The purpose of this library is to alleviate these problems employing some functional programming techniques but without losing the static typing of java. We impose this last constraint to make refactoring easier and safer and allow the compiler to do its job.
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untitled - 0 views
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initWidget(uiBinder.createAndBindUi(this));
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To inizialize the "menber variable" whith the widget object described in the XML view despription
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uiBinder.createAndBindUi(this)
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GWT compiler won't actually visit this URL to fetch the file, because a copy of it is baked into the compiler
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@UiField have default visibility
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UIObject
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DivElement
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If your factory method needs arguments, those will be required as attributes.
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Every widget that is declared in a template is created by a call to GWT.create().
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@UiConstructor annotation.
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you can mark your own widgets with
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CricketScores has no default (zero args) constructor
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you can define a @UiFactory method on the UiBinder's owner
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annotate a constructor of CricketScores with @UiConstructor.
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@UiFactory
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public class UserDashboard extends Composite { interface MyUiBinder extends UiBinder<Widget, UserDashboard> {} private static MyUiBinder uiBinder = GWT.create(MyUiBinder.class); public UserDashboard() { initWidget(uiBinder.createAndBindUi(this)); }}
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use several different XML templates for the same view
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public interface Display
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methods can be called to fill in attribute values
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jaxen: universal Java XPath engine - jaxen - 0 views
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"Jaxen is an open source XPath library written in Java. It is adaptable to many different object models, including DOM, XOM, dom4j, and JDOM. Is it also possible to write adapters that treat non-XML trees such as compiled Java byte code or Java beans as XML, thus enabling you to query these trees with XPath too. "
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Java Topic / Java tutorial Here we will discuss about various terms like JDK, JRE, JVM, JIT and applications like javac, java.
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Lucid Imagination » Don't Use Java 7, For Anything - 1 views
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In case you upgrade to Java 7, remember that you may have to reindex, as the unicode version shipped with Java 7 changed and tokenization behaves differently (e.g. lowercasing).
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Unfortunately it contains hotspot compiler optimizations, which miscompile some loops. This can affect code of several Apache projects. Sometimes JVMs only crash, but in several cases, results calculated can be incorrect, leading to bugs in applications
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docs.sonatype.org/...Tycho+reference+card
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JavaBlogging » What is serialVersionUID? - 2 views
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private static final long serialVersionUID = 1L
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and it is still there even after the program finished. Let’s see if we can read that file once again, this time without creating it first.
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Now, let’s see what happens, when we change the serialVersionUID value and try to deserialize once again our file. Change the line 2 in the class SerializeMe so that serialVersionUID contains now 2 instead of 1:
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serialVersionUID = 2L;
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static final
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Exception in thread "main" java.io.InvalidClassException:
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As you can see, this time the deserialization didn’t go well. ObjectInputStream complained about the serialVersionUID being changed.
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How does he know that it changed? If serialVersinUID is static, then it should not have been serialized in the first place, and there should be no information about the previous value 1 during the deserialization, right? Well, serialVersionUID is an exception to the rule that “static fields don’t get serialized”.
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Moreover, if there is no serialVersionUID officially declared in the class to be serialized, compiler automatically adds it with a value generated based on the fields declared in the class.
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The deserialization of that object does not necessarily have to occur exactly after serialization. It can occur after a few months or on a completely different JVM
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there is a chance that the class declaration has changed between serialization and deserialization.
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It checks if the data read from the input stream is compatible with the current definition of the class.
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when the visibility of a field changes, the serialVersionUID changes too.
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sometimes you just want for some reason to forbid deserialization of old serialized objects,
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you might tend to write it once for every serializable class ( or have it generated by the IDE ) and forget about it. WRONG !!!
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If you write it once and don’t take care to update it when necessary, you loose all the merits of serialVersionUID.
