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Quick guide on how to disable and enable Assertion in Java on runtime without changing code.

A good quick way of converting arraylist to set in java . ough its worth noting that all those method will eat duplicates silently and size of converted set might be less than or equal to original list.

An interface is a blueprint of a class. It has static constants and abstract methods. The interface is a mechanism to achieve fully abstraction in java. There can be only abstract methods in the interface. It is used to achieve fully abstraction and multiple inheritance in java. Interface also represents IS-A relationship.

The covariant return type specifies that the return type may vary in the same direction as the subclass. Before Java5, it was not possible to override any method by changing the return type. But now, since Java5, it is possible to override method by changing the return type if subclass overrides any method whose return type is Non-Primitive but it changes its return type to subclass type.

Operators in Java. An operator is a special type of symbol that is used to perform operations.Let's see the precedence of operators in Java.

Difference between JDK, JRE and JVM. Java Virtual Machine is a specification and implementaion provided by sun microsystem. It is an abstract machine that is used to provide runtime environment for Java application or applet.

Difference between JDK, JRE and JVM. Java Virtual Machine is a specification and implementaion provided by sun microsystem. It is an abstract machine that is used to provide runtime environment for Java application or applet.

"Seam 3 is collection of modules and developer tools based on the Java EE platform. The modules are portable extensions to CDI that integrate with other technologies to extend the core Java EE functionality. These modules bring you many of the beloved features and integrations from Seam 2 (security, internationalization, JSF, rules, business process management) and also branch out into new areas. IDE support is provided by the JBoss Tools Eclipse plugins. Before diving in, get up to speed with the status and direction of Seam 3. Also be sure to check out the latest news at the bottom of the page. "

SchemaCrawler is an open-source Java API that makes working with database metadata as easy as working with plain old Java objects. SchemaCrawler is also a command-line tool to output your database schema and data in a readable form. The output is designed to be diff-ed with previous versions of your database schema.

A web site building an open community dedicated to enabling Java as a first class development and runtime environment for .NET. A Java 5 JDK for .NET is provided.

Business Intelligence solution plays important role to drive for organization. Aegis offering business intelligence software with latest java technology and tools.

"dom4j is an easy to use, open source library for working with XML, XPath and XSLT on the Java platform using the Java Collections Framework and with full support for DOM, SAX and JAXP. "

Atmosphere is a POJO based framework using Inversion of Control (IoC) to bring push/Comet and Websocket to the masses! Finally a framework which can run on any Java based Web Server, including Tomcat, Jetty, GlassFish, Weblogic, Grizzly, JBossWeb and JBoss, Resin, etc. without having to learn how Comet or WebSocket support has been differently implemented by all those Containers. The Atmosphere Framework has both client (JQuery PlugIn) and server components. Servlet 3.0 is supported along with framework like Jersey (natively), GWT (natively), Wicket, Guice, Spring etc. and programming language like JRuby, Gr oovy and Scala. We also support massive scalability with our Cluster plugin architecture (JGroups, JMS/ActiveMQ, Redis, XMPP,i etc.)

Sapphire - develop UI without wiring individual widgets Little has changed in the way Java desktop UI is written since the original Java release. Technologies have changed (AWT, Swing, SWT, etc.), but fundamentals remain the same. The developer must choose which widgets to use, how to lay those widgets out, how to store the data being edited and how to synchronize the model with the UI. Even the best developers fall into traps of having UI components talk directly to other UI components rather than through the model. Inordinate amount of time is spent debugging layout and data-binding issues. Sapphire aims to raise UI writing to a higher level of abstraction. The core premise is that the basic building block of UI should not be a widget (text box, label, button, etc.), but rather a property editor. Unlike a widget, a property editor analyzes metadata associated with a given property, renders the appropriate widgets to edit that property and wires up data binding. Data is synchronized, validation is passed from the model to the UI, content assistance is made available, etc. This fundamentally changes the way developers interact with a UI framework. Instead of writing UI by telling the system how to do something, the developer tells the system what they intend to accomplish. When using Sapphire, the developer says "I want to edit LastName property of the person object". When using widget toolkits like SWT, the developer says "create label, create text box, lay them out like so, configure their settings, setup data binding and so on". By the time the developer is done, it is hard to see the original goal in the code that's produced. This results in UI that is inconsistent, brittle and difficult to maintain.

SQL Workbench/J is a free, DBMS-independent, cross-platform SQL query tool. It is written in Java and thus it should run on any operating system that provides a Java Runtime Environment. It's main focus is on running SQL scripts (either interactively or as a batch) and export/import features. Graphical query building or more advanced DBA tasks are not the focus and are not planned Current stable version: Build 110 (2011-02-13) Current development build: 110.5 ( 2011-04-25)

Querydsl is a framework which enables the construction of type-safe SQL-like queries for multiple backends including JPA, JDO and SQL in Java. Instead of writing queries as inline strings or externalizing them into XML files they are constructed via a fluent API. Code completion in IDE (all properties, methods and operations can be expanded in your favorite Java IDE) Almost no syntactically invalid queries allowed (type-safe on all levels) Domain types and properties can be referenced safely (no Strings involved!) Adopts better to refactoring changes in domain types Incremental query definition is easier Querydsl is licensed under the LGPL 2.1 license.

Jettison is a collection of Java APIs (like STaX and DOM) which read and write JSON. This allows nearly transparent enablement of JSON based web services in services frameworks like CXF or XML serialization frameworks like XStream. There are currently two included conventions for mapping JSON to XML. The first, is BadgerFish which implements the full XML infoset in JSON using various techniques. The second, is called the "mapped" convention. It allows you to manually map XML namespaces to JSON element prefixes. Jettison was developed for usage in XFire and CXF to enable JSON based services. Later it also found its place in Java object serialization with XStream To learn more, see the User's Guide.

Eclipse Gemini Blueprint is the reference implementation for the OSGi Alliance Blueprint Service (chapter 121 of the OSGi 4.2 Compendium Specification). Gemini Blueprint project makes it easy to build Java applications that run in an OSGi framework. By using Gemini Blueprint, applications benefit from using a better separation of modules, the ability to dynamically add, remove, and update modules in a running system, the ability to deploy multiple versions of a module simultaneously (and have clients automatically bind to the appropriate one), and a dynamic service model. Gemini users may also be interested in Eclipse Virgo, an open source, completely modular, OSGi-based Java application server. Its documentation is considered a supplement to Gemini Blueprint as it explains in detail, how OSGi can be used in various development and production scenarios.

Aegis professionals will share information about JVM and Docker and how their combination can be really helpful for Java Developers. This article is shared to Help Java Development Community and the developers all over the world.

Before we proceed ahead and discuss more about Java consulting services we must understand what exactly Java is. Well it is a sort of software programming language that is being used for the development of web pages, websites and many exciting applications.

Welcome to Merit Campus. Merit Campus is a website which helps in learning and improving your programming skills using the Java programming language