Saving values in form

Hi all,
I have a JSP page that takes input from user such as, textarea, text, drop down list. I am checking the validity of those values using a Javabean. where connections are made to the database and check for inputs whether is that already in database or not. based on the result mesages are shown on the HTML form underneath every input box.
So it is just refreshing the page not sending them to another page. just sending to java beans and getting result.
Now every time a user enters an invalid input the form refreshed and shows the error message but the inputs such as texts and dropdownlist selected items get lost so the user has to select them again.
My question is how an i save those inputs in the form so that user don't need to enter them every time. just they can amend the wrong input.
Does anyone know a way, please can you help me.
Thanks

At the beginning of your jsp, you can retrieve all the form data the user entered via code like
<%
String name = (request.getParameter("name") != null) ? request.getParameter("name") : " ";
String address = (request.getParameter("address") != null) ? request.getParameter("address") : " ";
%>Then when you are creating the form fields, you populate the value:
<input type="text" name="address" value="<%=address%>">

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