how to make validator utility same works as struts validator

[devendra kumar gupta]

i am making a own framwork which follow mvc pattern same the working of struts framwork.i want an idea, how to make validator in this framwork same working of struts validator.

[Merrill Higginson]

Struts adapts the Jakarta Commons Validator as the engine for it's Validation framework. You may want to start with the commons validator as well and build on it for your framework.