KYRIAKOS ANASTASAKIS - ΚΥΡΙΑΚΟΣ ΑΝΑΣΤΑΣΑΚΗΣ » java http://kyriakos.anastasakis.net Wed, 14 Oct 2009 20:03:33 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 Must have Eclipse plugins http://kyriakos.anastasakis.net/2009/10/14/must-have-eclipse-plugins/ http://kyriakos.anastasakis.net/2009/10/14/must-have-eclipse-plugins/#comments Wed, 14 Oct 2009 19:51:07 +0000 Kyriakos Anastasakis http://kyriakos.anastasakis.net/?p=204 From time to time I develop something on Eclipse. Apart from the usual Eclipse operations (build and test) that I do with the Eclipse Ant and JUnit plugins (they ship with Eclipse for Java), I also wanted to carry out some dependency analysis on existing code. Of course JDepend is the obvious option, but I found a nice article from IBM that suggests some additional plugins that help the coder carry out day to day tasks such as Complexity monitoring and Coding standard analysis.

The following is a summary of the plugins proposed by the article. Of course all of them are opensource/free.

Tool Purpose URL for Eclipse plugin
CheckStyle Coding standard analysis http://eclipse-cs.sourceforge.net/update/
Coverlipse Test code coverage http://coverlipse.sf.net/update
CPD Copy/Paste detection http://pmd.sourceforge.net/eclipse/
JDepend Package dependency analysis http://andrei.gmxhome.de/eclipse/
Metrics Complexity monitoring http://metrics.sourceforge.net/update

The full IBM article can be found here: http://www.ibm.com/developerworks/java/library/j-ap01117/

]]> http://kyriakos.anastasakis.net/2009/10/14/must-have-eclipse-plugins/feed/ 0 Exception using XMLConfiguration http://kyriakos.anastasakis.net/2009/02/23/exception-using-xmlconfiguration/ http://kyriakos.anastasakis.net/2009/02/23/exception-using-xmlconfiguration/#comments Mon, 23 Feb 2009 14:01:36 +0000 Kyriakos Anastasakis http://kyriakos.anastasakis.net/?p=157 I tried using the Apache XMLConfiguration to save the settings of an application I am developing to XML format. When I used it with Java 1.5 it all worked perfectly; however if I tried using it with Java 1.6 I was getting the following exception.


Exception in thread "main" java.lang.AbstractMethodError: org.apache.xerces.dom.DocumentImpl.getXmlStandalone()Z
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.setDocumentInfo(Unknown Source)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(Unknown Source)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(Unknown Source)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(Unknown Source)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(Unknown Source)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(Unknown Source)
at org.apache.commons.configuration.XMLConfiguration.save(XMLConfiguration.java:880)
at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration$FileConfigurationDelegate.save(AbstractHierarchicalFileConfiguration.java:454)
at org.apache.commons.configuration.AbstractFileConfiguration.save(AbstractFileConfiguration.java:546)
at org.apache.commons.configuration.AbstractFileConfiguration.save(AbstractFileConfiguration.java:513)
at org.apache.commons.configuration.AbstractFileConfiguration.save(AbstractFileConfiguration.java:491)
at org.apache.commons.configuration.AbstractFileConfiguration.save(AbstractFileConfiguration.java:403)
at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.save(AbstractHierarchicalFileConfiguration.java:199)

After doing some search on google I found that this can be a problem with the xerces XML library (xercesImpl.jar). Checking the 3rd party libraries I am using in my project, I found a library that was using and distributing an earlier version of xercesImpl.jar.

I downloaded the latest version (2.91) of xercesImpl.jar from the Apache xerces project (http://xerces.apache.org/mirrors.cgi#binary) and replaced in the 3rd party library I was using the xercesImpl.jar file with the one I downloaded. Now everything seems to work fine, even in Java 1.6.  :-)

]]> http://kyriakos.anastasakis.net/2009/02/23/exception-using-xmlconfiguration/feed/ 0 Log4j result in JTextPane http://kyriakos.anastasakis.net/2007/12/31/log4j-result-in-jtextpane/ http://kyriakos.anastasakis.net/2007/12/31/log4j-result-in-jtextpane/#comments Mon, 31 Dec 2007 19:50:29 +0000 Kyriakos Anastasakis http://kyriakos.anastasakis.net/blog/2007/12/31/log4j-result-in-jtextpane/ I recently wanted to redirect the output of Log4j to a JTextPane, so as to output messages to the JTextPane using a different color depending on the severity.

I spent some time searching for information and I quickly put together a small example. The following screenshot shows the output.

screenshot.jpg

The source code is available here.

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