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Deepak Vohra

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This article compares Document Type Definition (DTD) and XML Schema elements. Java 2 Enterprise Edition (J2EE) developers use DTDs and schemas in J2EE/XML applications. When a DTD for an XML document is provided and validation with an XML Schema is required, the DTD-to-XML Schema conversion creates an XML Schema document corresponding to the DTD document. Overview A DTD defines the structure of an XML document and defines a document's element types, subelement types, and the order and number of each element type. It also declares the attributes, entities, notations, processing instructions, and comments. An XML Schema is an XML-based representation of the structure of a XML document. Among the advantages of XML Schema is support for data types and namespaces. XML Schema, being XML based, is an extensible, complex representation of an XML document structure. In this ... (more)

Migrating a JBoss EJB Application to WebLogic

The JBoss open source application server is commonly used in the development phase of a J2EE project. In the production phase the commercial BEA WebLogic server is preferred because of its enhanced set of features. Without modifications, an application developed in JBoss does not deploy in WebLogic server. The deployment descriptors for the WebLogic server are different from the JBoss deployment descriptors. An application may be migrated to WebLogic by converting the vendor-specific deployment descriptors to WebLogic. In this tutorial an EJB application developed in JBoss will ... (more)

Configuring the WebLogic-Eclipse Plug-in

The WebLogic-Eclipse plug-in is designed to run the WebLogic Server from the Eclipse IDE. With the WebLogic-Eclipse plug-in, the WebLogic Server gets started and stopped from Eclipse. An application deployed in the WebLogic Server can be debugged from Eclipse with the plug-in. By installing the WebLogic plug-in in Eclipse the WebLogic Server can be configured and administered from the Eclipse IDE by setting the server classpath and JVM options in Eclipse. Overview A J2EE developer is commonly required to administer the WebLogic Server and debug applications deployed in the WebLo... (more)

JDJ Feature — Java API for XML Web Services (JAX-WS)

WebLogic Server 10 Technology Preview supports JEE 5. A feature of JEE 5 is the Java API for XML Web Services (JAX-WS) used to create Web Services and Web Service clients. WebLogic Server 10 provides the jwsc task to create the Web Service artifacts and the clientgen task to create the artifacts for Web Service clients. In this article we'll create an example JAX-WS 2.0 Web Service in WebLogic Server 10 Technology Preview. JAX-WS is an API to create Web applications and Web Services using the XML-based Web Services functionality. To create a Web Service first create a Service En... (more)

Configuring Eclipse for Remote Debugging a WebLogic Java Application

A J2EE application deployed in the WebLogic server may be debugged in the Eclipse IDE with the remote debugger provided by Eclipse. Without a debugger the error message has to be obtained from the application server error log to debug the application. With the remote debugger provided by Eclipse, exception breakpoints may be added to the application file to debug. When an application is run in WebLogic and the application generates an error, the application gets suspended and the Eclipse IDE Debug perspective displays the error. In this tutorial we will debug a WebLogic Applicat... (more)