<form action="servlet.jsp" method="post">
<fieldset>
  <label for="Name">Name</label>
  <input type="text" name="name" id="name" value=""><br>
  <label for="Price">Price</label>
  <input type="text" name="Price" id="price" value=""><br>
</fieldset>
</form>

<% String param = request.getParameter("watch"); %>
<% String param2 = request.getParameter("case"); %>

if(param !=null){
    //assign variables and populate with data x
}
//and so on

<% String param = request.getParameter("edit"); %>
<% String param2 = request.getParameter("editt"); %>

<input type="submit" name="watch" value="Edit" id="edit" />
<input type="submit" name="case"  value="Edit" id="editt" />

<input type="submit" name="submit"  value="Edit X" id="edit" />
<input type="submit" name="submit"  value="Edit Y" id="editt" />

String button = request.getParameter("submit");
if(button == null)
{
  out.print("no form was submitted");
  return;
}
else if("Edit X".equals(button))
{
  out.print("button 1 was pressed");
  return;
}
else if("Edit Y".equals(button))
{
  out.print("button 2 was pressed");
  return;
}