This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
I want to create dynamically text boxes in a Struts form and want to map those text box field into a form bean , So that i can read back those value in action class, Now my problem is I am not sure how many Text box variable i need to declare in my Form Bean class ?
One approach you can adopt is that you give all your textboxes the same value for the name attribute. And have getter/setter for the same name in your form bean. Just remember that instead of handling a String value, your getter/setter should handle a String. Something like:
This way you don't need to be concerned about how many textboxes are rendered. Be it a single or "n" number of textboxes, the values for each of them will get saved into the String of the form bean. However, you'll need to put in some additional logic either at the client or server side, if it is important for you to map values present at different indices of the String to particular labels. Things you need to keep in mind: 1. If the user doesn't enter any value in any one of the textboxes, then there will not be a blank entry corresponding to it in the form bean's String variable. 2. The order in which the values are present in the String is directly related to the order in which the textboxes appear at the client side.