By Mark Watson
The issues encountered via a starting Java programmer are many--and often minor.The difficulties you stumble upon as an skilled Java programmer are a long way fewer—and way more serious.Java Programming 10-Minute ideas offers direct suggestions to the thorny difficulties you are probably to run up opposed to on your paintings. specially whilst a venture involves new innovations or attracts you right into a realm open air your quick services, strength complications abound. With this booklet, a veteran Java programmer saves you either aggravation and—just as important—time.Here are many of the ideas you will discover inside:Parsing XML utilizing SAX and DOM, and utilizing XSLT to rework XML to HTMLJava dossier I/O: copying and deleting complete directoriesUsing Java seek algorithmsThread managementLeveraging Java internet prone aid in cleaning soap, XML-RPC, and XML over HTTPLow-level JDBC programmingUsing servlets and JSPs (including struts) for net applicationsUsing firm JavaBeans (EJBs) box controlled persistenceGenerating EJB sessions with ant and XDocoletUsing JUnit for unit testingModeled after the simple Q&A procedure of the DevX web site, those in-depth, code-intensive strategies assist you earlier stumbling blocks instantaneously and eventually make you a wiser, more advantageous programmer.
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Additional resources for Java Programming 10-Minute Solutions
XHTML is well-formed HTML; that is, it’s HTML that is legal XML. The bad news is that the learning curve for writing XML XSLT formatting objects is a bit steep. I will start out with the easy part of this solution, the Java application that uses dom4j to apply XSLT to XML documents. I will then present a short tutorial on XSLT, and the interested reader is encouraged to read one of more of the excellent XSLT tutorials on the Web. org/xxl/XSLTutorial, or Chuck White’s book Mastering XSLT (Sybex, 2002).
The method replace() in the StringUtils class replaces all instances of an old string with a new string (starting at a specified index in the original source string). The last argument in all three methods is a Boolean flag that allows the string matching operation to be done in a caseinsensitive mode. replace(s, "the", "THE", 0, true); The use of this utility class is simple. In this example, num1 and num2 are both 1, index1 is 21, index2 is 0, and s2 is “THE bad dog ran down THE street after THE black cat”.
You will see shortly how to get attribute data from elements. In this method, the second argument depth is used to show you how far “down” in the DOM tree each call to the searchTree() method is. There are a few ways to find the child elements of a specific element. In the last code snippet, I first used the Element class method nodeCount() to get the number of child nodes (elements) and then in a loop used the Element class method node. println("Iterator demo: childElement =" + childElement); } While it is possible to perform any DOM manipulation using the techniques seen in this section, there is a better way to access portions of a DOM tree: use XPATH.