JSF - When to use message-bundle and resource-bundle ?

Question

When should I use resource-bundle and message-bundle tags for i18n in faces-config? The differences between those two are not very clear to me.

Answer 1

The message-bundle is to be used whenever you want to override JSF default warning/error messages which is been used by the JSF validation/conversion stuff. The resource-bundle is to be used whenever you want to specify localized text which is to be loaded by f:loadBundle tag.

You can find keys of the default warning/error messages in the JSF specification (chapter 2.5.2.4). You can find here an example.