Apache Struts framework tutorials.
The protocol treats all the HTTP requests as a String. It may include Boolean, integers, dates, numbers, decimals and everything. According to HTTP protocol, everything is a string. As compared to this approach, the struts class supports the data types and it has properties.
Different types of converters are used by the struts so that it can perform heavy lifting. For example, in your Action class you have a specific data type like integer; it will be automatically converted into integer