Codedrop™ Weblog

By default, accessing an HTTPS URL using the URL class results in an exception if the server’s certificate chain cannot be validated has not previously been installed in the truststore. If you want to disable the validation of certificates for testing purposes, you need to override the default trust manager with one that trusts all [...]

This past week has left me having to learn much more about https certificates then I ever thought I would care to know…   Here’s a synopsis of some of the highlights of my learnings as pulled from various resources on the web. OpenSSL supports several certificate formats. Certificates are based on the DSA signature algorithm [...]

I keep coming across instances of ant build files where developers have hard coded a usage target that outputs target actions.  This is not required and should be avoided as it is often not maintained.  Instead, properly maintain the description attribute of each target and use a default target as below:   <project name=”foo” basedir=”.” default=”usage”> [...]

Grails application throwing OutOfMemory error and PermGen space was exceeeded errors… Looks like grails applications require a fairly large permgen space… Here’s a useful  article on how to address this. Tweet This Post

Here’s a quick solution for trying to extract the raw xml string from an Oracle XDB database when working with Grails. After an initial attempt to hardcode a hibernate query to return the raw sql using .getStringVal() as follows: SELECT x.id, x.xmlData xmldata.getStringVal(), lines.* FROM xml_requests x XMLTable(‘declare default element namespace “http://www.foo.com/fooservice”; for $i in [...]

When javac is compiling a large number of java source files, it may fail with java.lang.OutOfMemoryError: The system is out of resources.Consult the following stack trace for details.java.lang.OutOfMemoryError: Java heap space It’s no different than OutOfMemoryError in other java applications. When you run javac in Sun JDK, it’s invoking com.sun.tools.javac.main.Main located in %JAVA_HOME%\lib\tools.jar. If you [...]

Something I have always found annoying about JSF datatables is the limitation to only apply one header class style to the entire table. This is un-functional for datatables that would display monetary amount or other data that is typically right aligned whereas descriptive columns are left aligned. The table doesn’t look very nice if the [...]

There have been times where I’ve had the need to perform some custom code when a JUnit test failure occurs. A simple way to handle this would be to catch Throwable do you logic and then re-throw the exception. Not the most elegant of solutions.. but works nonetheless. Heres an example using the selenium rc [...]

The Jakarta Commons Logging package is an ultra-thin bridge between different logging libraries. Components may use the Commons Logging API to remove compile-time and run-time dependencies on any particular logging package, and contributors may write Log implementations for the library of their choice. Levels To Use The six logging levels provided by the commons logging [...]