Validating input in java
If conversion and validation are successful, then the Update Model phase starts and the converted and validated values are used to update the model.
ADF Faces components provide a way of declaratively setting these messages.
For more information, see Section 7.3, "Adding Conversion." You may also find it helpful to understand functionality that can be added using other ADF Faces features.
For more information, see Section 7.1.2, "Additional Functionality for ADF Faces Converters and Validators." To add ADF Faces converters that have tags: Patterns specify the format of data accepted for conversion. For example, a user could enter dates using a slash (/) or hyphen (-) as a separator.
You can easily drag and drop ADF Faces converters into an input component.
ADF Faces validators also augment the standard JSF validators.