Display value of float from servlet to jsp page.

[ajos]

Hi friends,
The situation is, in my class i have certain float parameters like--->

Double double1 = new Double(s18);
            float f3 = double1.floatValue();

and s18 is--> s18 = resultset.getString("Budget_Alloted");
and so on...
and in my jsp page i want to display the value of f3
for ex-->[HTML]BUDGET ALLOTED : <b>" + f3 + "</b><br>[/HTML] . How can i do that. Any help will be appreciated.
regards,
ajos

[r035198x]

Hi friends,
The situation is, in my class i have certain float parameters like--->

Double double1 = new Double(s18);
            float f3 = double1.floatValue();

and s18 is--> s18 = resultset.getString("Budget_Alloted");
and so on...
and in my jsp page i want to display the value of f3
for ex-->[HTML]BUDGET ALLOTED : <b>" + f3 + "</b><br>[/HTML] . How can i do that. Any help will be appreciated.
regards,
ajos

 <%=f3%>

Also have a google at Java's naming and code conventions. I'm sure you'll find them instructive.

[ajos]

 <%=f3%>

Also have a google at Java's naming and code conventions. I'm sure you'll find them instructive.

Thanks for the response...thats what we do to display the value....But my problem is how to bring the value of float f3 to be displayed in a jsp page....for example...for a property in a form viz username to be dispayed we write something like this is form bean--->

setUsername(String username)
and getUsername();
 

and in jsp page we do something like

formbean.getParameter("username")
<%=username%>
 

something like this. I hope you got my point.

[r035198x]

Thanks for the response...thats what we do to display the value....But my problem is how to bring the value of float f3 to be displayed in a jsp page....for example...for a property in a form viz username to be dispayed we write something like this is form bean--->

setUsername(String username)
and getUsername();
 

and in jsp page we do something like

formbean.getParameter("username")
<%=username%>
 

something like this. I hope you got my point.

Sorry I don't get your point ...
The float f3 will be displayed on the JSP page if you put the code I posted above in the JSP.

[ajos]

Sorry I don't get your point ...
The float f3 will be displayed on the JSP page if you put the code I posted above in the JSP.

Ok. by writing <%=f3%> i can display the value. But the code

Double double1 = new Double(s18);
float f3 = double1.floatValue();
 

is in my servlet class. How do i set and get here in order to display it in my jsp page. Hope you get me this time:)

[r035198x]

Ok. by writing <%=f3%> i can display the value. But the code

Double double1 = new Double(s18);
float f3 = double1.floatValue();
 

is in my servlet class. How do i set and get here in order to display it in my jsp page. Hope you get me this time:)

You have to pass the value to the JSP then using request.setAttribute or the session attribute.

[ajos]

You have to pass the value to the JSP then using request.setAttribute or the session attribute.

Ive done something like this in my servlet--->

Double double1 = new Double(s18);
            float f3 = double1.floatValue();
            httpservletrequest.setAttribute("f3", f3);

is this way right?
now how do i retrieve the value in jsp page?

[r035198x]

Ive done something like this in my servlet--->

Double double1 = new Double(s18);
            float f3 = double1.floatValue();
            httpservletrequest.setAttribute("f3", f3);

is this way right?
now how do i retrieve the value in jsp page?

request.setAttribute("name", value);

Then in the JSP you use

request.getAttribute("name");

[ajos]

request.setAttribute("name", value);

Then in the JSP you use

request.getAttribute("name");

I did something like this

<%request.getAttribute("f3"); %>
BUDGET ALLOTED : <b> <%=f3 %> </b><br>
 

I think its wrong coz f3 is not recognized here.Or am i doing something wrong here?

[r035198x]

I did something like this

<%request.getAttribute("f3"); %>
BUDGET ALLOTED : <b> <%=f3 %> </b><br>
 

I think its wrong coz f3 is not recognized here.Or am i doing something wrong here?

Of course it's not.
You need to declare it with something perhaps like

String f3 = request.getAttribute("f3");

P.S Please do not ignore my earlier comment about having a look at code conventions.

[ajos]

Of course it's not.
You need to declare it with something perhaps like

String f3 = request.getAttribute("f3");

P.S Please do not ignore my earlier comment about having a look at code conventions.

Ok. I did as you said but we cannot convert from object to float.
like

<%float f3=request.getAttribute("f3"); %>
BUDGET ALLOTED : <b> <%=f3 %> </b><br>

I had tried this way earlier too. As for the naming conventions goes, this project is not done by me, ive told to make certain modifications in them, so i cant really change what the original developer has done, but i agree with you the naming conventions are horrible.

[r035198x]

Ok. I did as you said but we cannot convert from object to float.
like

<%float f3=request.getAttribute("f3"); %>
BUDGET ALLOTED : <b> <%=f3 %> </b><br>

I had tried this way earlier too. As for the naming conventions goes, this project is not done by me, ive told to make certain modifications in them, so i cant really change what the original developer has done, but i agree with you the naming conventions are horrible.

request.getAttribute returns an object. You have to cast it to the type that you want.