Illegal Argument Exception

Here's a simple application based on the code from a previous post . You can run it on .class files, .jar files or directories (it...

Calling my web log Illegal Argument Exception seemed like a clever idea at the time. It is probably just a recipe for confusing Java neophy...

This is a post about how to work with IDs in JavaServer Faces. You may find this useful if you want to use JavaScript with JSF. Example I...

This is a small application that's useful for solving character encoding bugs. If you've ever wanted to find out exactly what char...

This post describes a custom JavaServer Faces component for controlling the flow layout of controls based on localised strings.

The JVM versions your Java classes will run on is often determined by how you compile them. Failure to take care with your classes and depen...

This is my attempt at a list of maxims to abide by when working with text in Java, in the vein of Effective Java or The Ten Commandments of...

XPath is a handy expression language for running queries on XML. This post is about how to use it with XML namespaces in Java ( javax.xml....

Updated 2009/11/24 This post is obsolete; go read this one instead: JSF: working with component identifiers The approach described in thi...

Java 6 (via JSR 223 ) added scripting language support to the standard library . The JVM ships with the Mozilla Rhino JavaScript engine inc...

Updated 2009/11/24 This post is obsolete; go read this one instead: JSF: working with component identifiers The approach described in thi...

It can be tricky figuring out the difference between character handling code that works and code that just appears to work because testing ...

By default, Java encodes Strings sent to System.out in the default code page. On Windows XP, this means a lossy conversion to an "ANSI...

Strange things can happen when working with characters. It is important to understand why problems occur and what can be done about them. Th...

The Java Platform Debugger Architecture (JPDA) API included in the JDK lets you connect to a Java debug session and receive debug events. T...

Unfortunately, there is no 100% foolproof process for determining how to validate an arbitrary XML document. If you are receiving a document...

Updated 2009/10/17 WARNING: this post is obsolete; go read this one instead .

Can you spot the problem with the following dialog? I expect the developers of the Steam installer are making trade-offs for the bene...

I spend quite a lot of time writing Java code. I got to thinking about the time I spent implementing, testing, maintaining and just paging o...

This article was written with Java 6 in mind. Updated 2008/12/16.    /**     * Writes "Hello, World!" to a fi...