CODEWITHSUNDEEP
javajsp
user2133606
user2133606

Reputation: 347

how to add one to integer on submit button to jsp string?

<input type="text" name="integer" value="0"/>
<input type="submit" value="add one" />

<% 
String integer = request.getParameter("integer"); 
%>

<%
int x = 0;
try { x = Integer.parseInt("integer"); }
catch (Exception e) { x = 0; }
%>

How can I add one to the integer each time I hit the submit button?

Upvotes: 1

Views: 1405

Answers (1)

Ravindra Gullapalli
Ravindra Gullapalli

Reputation: 9168

<% 
String integer = request.getParameter("integer"); 
int x = (integer == null ? 0 : (Integer.parseInt(integer) + 1));
%>

<input type="text" name="integer" value="<%=x%>"/>
<input type="submit" value="add one" />

Upvotes: 2

Related Questions