Illegal Argument Exception

Let's take a JavaScript string: "€100" . This is going to be sent from a browser input box and stored in a web server's da...

When you see a JSP document, you might wonder why it specifies the UTF-8 encoding three or four times. This is a post about what those decla...

Comments are moderated and will not appear until I approve them. I don't live on the blog, so it may take me some time to see and re...

The method System.console() can return null if there is no console device present. This comes as a surprise to people when they run their ...

Content is not allowed in prolog is an error generally emitted by the Java XML parsers when data is encountered before the <?xml... dec...

This is the fourth post about my experiments with a fluent I/O API. This post covers conclusions and limitations of the implementation. You ...

This is the third post about my experiments with a fluent I/O API. This post covers how the API enhances exception handling.

This is the second post about my experiments with a fluent I/O API. This post covers how to extend the API.

I've been experimenting with fluent API design. You can find the sources in part 4 . I've often been frustrated with the verbosity...

Don't assume that the character handling conventions you've learnt in one language/platform will automatically apply in others. I...

I was looking at Scala again and decided to implement Peter Norvig 's algorithm for suggesting spelling correction suggestions. I sugges...

This post discusses HTTP URLs in Java and how to avoid data loss due to encoding/escaping issues. Special mention is made of the query part,...

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....