XML documents can be used to transfer data. The data in an XML document can
be retrieved either with the JAXP (Java API for XML Processing) DOM and SAX
APIs, or with the JAXP XPath API. Addressing an XML document with XPath has
the advantage of selecting a single node directly without iterating over a
node set. In this article, we'll explore XPath support in Oracle
JDeveloper-XDK 11g. The article is a book extract from Packt Publishing's
Processing XML Documents in Oracle JDeveloper 11g.
With SAX and DOM APIs, node lists have to be iterated to access a particular
node. Another advantage of navigating an XML document with XPath is that an
attribute node may be selected directly. With DOM and SAX APIs, an element
node has to be selected before an element attribute can be selected. Here
we'll discuss XPath support in JDeveloper.
What Is XPath?
XPath is a language for a... (more)
The Apache Jakarta POI project provides components for the access and
generation of Excel documents. The POI HSSF API is used to generate Excel
Workbooks and to add Excel spreadsheets to a workbook. An Excel spreadsheet
consists of rows and cells. The layout and fonts of a spreadsheet are also
set with the POI HSSF API.
A database table is often required to be presented in an Excel spreadsheet.
Also, a developer's requirement could be to store an Excel spreadsheet in a
database table. The Apache POI HSSF project is an API to create an Excel
spreadsheet. The data in the Excel spr... (more)
The Java Database Connectivity (JDBC) API is used to access a SQL database
from a Java application. JDBC also supports tabular data sources, such as a
Oracle JDeveloper is a free Integrated Development Environment (IDE) for
modeling, developing, debugging, optimizing, and deploying Java applications.
JDeveloper 10g is used to develop J2EE applications comprising the JSPs,
EJBs, struts, servlets, and Java classes that may require accessing a
database table in an Oracle 10g Database or a third-party database. In this
extract from the book JDBC 4.0 and Oracle JDevelope... (more)
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)
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.
A J2EE developer is commonly required to administer the WebLogic Server and
debug applications deployed in the WebLo... (more)