The Java EE 5 Tutorial

Configuring Error Messages

In case the standard error messages don’t meet your needs, you can create new ones in resource bundles and configure the resource bundles in your application configuration resource file. The guessNumber example has one custom converter message, as described in Adding a Custom Message.

This message is stored in the resource bundle,

userNoConvert=The value you entered is not a number.

The resource bundle is configured in the application configuration file:


The base-name element indicates the fully-qualified name of the resource bundle. The var element indicates the name by which page authors refer to the resource bundle with the expression language. Here is the inputText tag again:

<h:inputText id="userNo" label="User Number"

The expression on the converterMessage attribute references the userNoConvert key of the ErrMsg resource bundle.

See Registering Custom Error Messages for more information on configuring custom error messages.