Defining a validate() method

[Session A Mwamufiya]

Hi,

I want to set up my own validate method to validate fields in my own way, but 
I'm not sure how to set up the method.  I don't know how to set or clear the 
validation error message.  Is it ok just to use the action's error stack, like 
this:

public void validate() {
  if (listOfExistingElement.contains(field1)) {
    addActionError("This element already exists");
  }
}

Is there a better way to make use of the framework, or is this it?  I searched 
for examples online but couldn't find any.

Thanks for the push,
Session


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