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Core Java Topics - Overview Of Programming With Java, Datatypes, Variables, Operators, Control Statements, Methods - Importance, Array - Overview, Classes, Class Inheritance, Methods Overiding and Overloading, Abstract Class And Methods, Interfaces, Packages and Access Control, final, static and others, Object Oriented Concepts - Revisited, Exceptions, Generics, Strings, Exploring java.lang, Collections Framework, More Utility Classes, Input/Output: Exploring java.io, Other Core Java Topics

The goal of the Eclipse Scout project is making it easy to build distributed enterprise applications based on the Eclipse platform. It consists of a runtime framework providing transparent service communication between the client and backend part and is shipped with a rich set of common user interface components. The user interface is not built for a particular rendering technology but it encapsulates the core functionality into a headless model. GUI factories are available for rendering the client model into a particular target UI platform. SWT and Swing are supported out of the box and an AJAX GUI factory could be easily added. Developing Scout applications is supported by the Scout SDK, a plug-in set built on top of Eclipse PDE and Eclipse JDT. The Scout SDK works directly on the bare Java resources and assists the development task by providing an augmented view on the underlying Java code. Additionally, it comes with a rich set of wizards and operations for modifying the Scout application project just by editing the underlying Java code. There is no meta-data required. Hence a developer can switch between editing resources using Eclipse's standard editors and leveraging the features of Scout SDK at any point in time. Eclipse Scout can be used to create multi-tier client/server applications, standalone client applications or OSGi-based server applications. Basically, there are three main advantages when choosing Scout as your framework for building such applications. First, the Scout runtime is service oriented by design. Almost every functionality is provided as an OSGi service. Every OSGi bundle may make use of them. Second, Scout provides a rich set of UI elements being uncoupled from a particular GUI technology. And third, building distributed client/server applications is as easy as if both parts would run within the same local JVM.

Ajax Push allows the application to incrementally update any part of the page at any time, for any group of clients. This is a small change in terms of the technical capabilities of Ajax applications, but it is a revolutionary change in terms of what applications can actually provide to users. Ajax Push is the key to building collaborative multi-user applications for the web. Under the Hood The intricacies of the Ajax Push implementation are completely transparent to the ICEfaces developer, as you work with a straightforward set of APIs. It is, however, useful to understand the basic mechanics. Ajax Push in ICEfaces 2.0 leverages an asynchronous notification mechanism call ICEpush. Simply put, ICEpush uses long polling to provide asynchronous notification over standard HTTP, using only standard browser capabilities. The sequence of events involved in Ajax Push is illustrated below.

JDBC 4.0 Enhancements in Java SE 6 Java Platform, Standard Edition (Java SE) version 6 (code name Mustang), is currently in its second beta release and is scheduled to be delivered in October of this year. Java SE 6 includes several enhancements to the Java Database Connectivity (JDBC) API. These enhancements will be released as JDBC version 4.0. The main objectives of the new JDBC features are to provide a simpler design and better developer experience. This article provides an overview of the JDBC 4.0 enhancements and what benefits they offer to enterprise Java developers. We will explore the new JDBC features with the help of a sample loan processing application using Apache Derby as the back-end database.

GWTQuery overview and examples

HttpClient is a HTTP/1.1 compliant HTTP agent implementation based on HttpCore. It also provides reusable components for client-side authentication, HTTP state management, and HTTP connection management. HttpComponents Client is a successor of and replacement for Commons HttpClient 3.x. Users of Commons HttpClient are strongly encouraged to upgrade.

"Apache Felix Gogo is a subproject of Apache Felix implementing the OSGi RFC 147, which describes a standard shell for OSGi-based environments. See RFC 147 Overview for more information. Using Gogo with the Felix Framework The Gogo subproject consists of three bundles: runtime - implements the core command processing functionality. shell - provides a simple textual user interface to interact with the command processor. command - implements a set of basic commands. As of the Apache Felix Framework 3.0.0, Gogo is included as the default shell in the framework distribution. To use it, you just start the framework like normal:"

Ajax Push enables real-time collaborative applications, based on a mechanism call ICEpush. Check out the Ajax Push overview before delving into the API. ICEpush Library - icepush.jar To enable Ajax Push with ICEfaces 2, you simply include the icepush.jar library with your application.

"Finagle is a library for building asynchronous RPC servers and clients in Java, Scala, or any JVM language. Overview Built atop Netty, Finagle provides a rich set of tools that are protocol independent. Finagle is flexible enough to support a variety of RPC styles, including request-response, streaming, and pipelining (e.g., HTTP pipelining and Redis pipelining). It also makes it easy to work with stateful RPC styles (e.g., those requiring authentication and those that support transactions)."

Package java.util.concurrent.atomic Description A small toolkit of classes that support lock-free thread-safe programming on single variables. In essence, the classes in this package extend the notion of volatile values, fields, and array elements to those that also provide an atomic conditional update operation of the form: boolean compareAndSet(expectedValue, updateValue);

"OpenCMIS is a collection of Java libraries, frameworks and tools around the CMIS (Content Management Interoperability Services) specification. The goal of OpenCMIS is to make CMIS simple for Java client and server developers. It hides the binding details and provides APIs and SPIs on different abstraction levels. It also includes test tools for content repository developers and client application developers."

  Eclipse Scout: "Hello World" App mzi | 23. March 2011 um 08.40 Uhr | Kategorien: General | Keine Kommentare | Install Scout: See the recent blog post Create Scout App: See new "Hello World" wiki tutorial Deploy to Tomcat: Wiki tutorial again Having Eclipse Scout and Tomcat installed all this should take you less than 15 minutes. If you happen to be at the Eclipse Con right now you may skip the download part, visit our boot #12 or attend our tutorial and get our Scouty memory stick with everything on it

In this article, we are going to look at how the Activiti BPM engine can be used together with Vaadin. We are going to do this in the form of a case study of a demo application that is available on GitHub. The code is licensed under Apache License 2.0 and can freely be used as a foundation for your own applications. Before continuing, you might want to check out this screencast of the demo application in action (HD quality is recommended):