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Cannot Cast From Object To Int Session


Thanks guys! May be its helpful. How safe is 48V DC? Also have you tested them FIRST (before the math) to make sure you are getting the type data you are expecting? http://electrictricycle.net/how-to/cannot-cast-from-object-to-int-jsp.html

This works only for numbers, thats what we needed. –Sudhakar Krishnan Feb 16 '14 at 13:03 @SudhakarK: (int) Object does only work if your object is a Integer. The nth numerator Singular cohomology and birational equivalence How can I check that the voltage output from this voltage divider is 2.25V? All rights reserved. Probably want's the string solution ala Coronauts –Bill K Sep 7 '10 at 18:20 And won't compile. –Ricky Clarkson Sep 8 '10 at 6:28 @Ricky What part? http://stackoverflow.com/questions/6031278/session-attribute-access-and-converting-to-int

How To Set Integer Value In Session In Java

if ((session.getAttribute("Browser").equals("NETSCAPE")) && ((session.getAttribute("BrowserVer") >= 4))){ I need to compare the Browser Version greater then 4 or equal Thanks Ray Roy Ben Ami Ranch Hand Posts: 732 posted 14 years You simply have to be sure of what kind of object you have. Browse other questions tagged java object casting integer or ask your own question. dc_dalton 2005-03-15 00:14:04 UTC #14 Here is an example I just whipped up to show you: public class NumTest { public void testNum() { double num = 12.34; int quantity =

sebflipper 2005-03-15 12:15:22 UTC #16 Humm I give up I used every combination I can think of and nothing works. HERE ........ Using this line of code seems to resolve my issue. int organisationId = Integer.parseInt(session.getAttribute("organisationId").toString()); Select all Open in new window From that I'm guessing the object (whatever it is) in the Session.getattribute In Java How else would it be possible to pass an int to setAttribute(String, Object) ? –Costi Ciudatu May 17 '11 at 13:36 add a comment| up vote 1 down vote Try int

Join them; it only takes a minute: Sign up Session attribute access and converting to int? How To Pass Integer Value From Servlet To Jsp Promoted by Experts Exchange Engage with tech pros in our community with native advertising, as a Vendor Expert, and more. as when retreived from the Session object as per your other threads) then simply cast it. java object casting integer share|improve this question asked Sep 7 '10 at 18:15 Sheehan Alam 21.3k93305515 1 What kind of Object? –NullUserException Sep 7 '10 at 18:17 5 What

Join them; it only takes a minute: Sign up How to cast an Object to an int in java? Convert Object To Int C# Converting it to String and parsing back into an int/Integer doesn't get you much, does it ? –Costi Ciudatu May 17 '11 at 13:26 I'm not sure how Object Join Now For immediate help use Live now! Browse other questions tagged java jsp or ask your own question.

How To Pass Integer Value From Servlet To Jsp

Then, instead of casting, call the getter. –Brian McCutchon May 23 at 18:12 add a comment| 17 Answers 17 active oldest votes up vote 250 down vote accepted If you're sure http://www.easywayserver.com/forum/viewtopic.php?t=1318 I went through the same thing trying to do calculations and processing, like connecting directly to JDBC, right in JSPs, very bad idea. How To Set Integer Value In Session In Java Solution Use Scala’s asInstanceOf method to cast an instance to the desired type. How To Get Session Value In Java Class rozner 2005-03-13 21:43:38 UTC #5 I think the tag has a scope attribute, though I could be wrong, but if I'm right then this should work

What is the definition of "rare language"? Today's Topics Dream.In.Code > Programming Help > Java Convert Object to type double? Any ideas how to get it working? weblink So I can just do this?: Double dObj = new Double("10.50"); double d = dObj.doubleValue(); System.out.println(d); Another thing that I'm looking into now, that I can't wrap my mind around (thought

Posted 09 September 2010 - 01:11 AM I don't really know what you mean about "Double not working in print". Get Session In Java Integer i = (Integer) o; // throws ClassCastException if o.getClass() != Integer.class int num = i; //Java 1.5 or higher share|improve this answer edited Sep 8 '10 at 13:11 answered Sep But the line itself cannot really throw a NPE.

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As already told, I'm not good at JAVA. –Mayank May 17 '11 at 13:32 In C++ it is surely not going to work, because Object class will not be When a supertype of Integer is expected (Object in this case), int will be passed as Integer. How do I reverse this javascript code? Session.getattribute In Jsp Instantiation, sessions, shared variables and multithreading5How to access HTTP sessions in Java1773Converting String to Int in Java?4How to maintain session in java4Accessing session variables outside servlet1Java Servlet HttpSession not maintained on

This is probably the most important concept to grasp when working with JSP & Servlets. Here is a little test program that simulates a session attribute. Prepared for Yet Another Simple Rebus? If you look at the API: static double parseDouble(String s) expects a String to be passed to it NOT a double!

asked 5 years ago viewed 37556 times active 4 days ago Visit Chat Linked -1 How to typecast object to int in jsp Related 1852Cast int to enum in C#0Access user You mean, you have the Integer userid assigned and then what ? Just do (int)Object instead of Double.valueOf(object.toString()).intValue(). Not the answer you're looking for?

This should be done in a servlet. share|improve this answer edited Oct 19 '15 at 11:55 answered Oct 16 '15 at 13:54 Dávid Horváth 1,149517 add a comment| up vote 0 down vote For Example Object variable; hastaId If not and you try call anything on it or you try to assign it to some int or pass it to some method expecting int, the NPE is natural. Thanks masijade, you have no idea how much you helping me here..

Home page By submitting this form, you accept the Mollom privacy policy. First Name Please enter a first name Last Name Please enter a last name Email We will never share this with anyone. one little miss-spelling of a variable's name OR something like a $ in a variable can blow you up. (not that that is the problem here but again without seeing the Just a straight question: How do I convert an object to type double? *I could of googled this but all the sites that look like they have the answer gets blocked

This is what I have got so far: <% String printMessage= page.getParameter( message ); out.print(printMessage); %> This should just output Hello Word, but I get the cause thats what that method is used on! Should be "user" instead. –Michele d'Amico Feb 20 '15 at 14:18 add a comment| up vote 0 down vote try this int userid = Integer.parseInt(session.getAttribute("user").toString()); share|improve this answer answered Nov 11 share|improve this answer edited Jun 14 at 11:58 Alexander Farber 4,63639140276 answered Sep 7 '10 at 18:17 extraneon 16.3k12746 There's auto boxing/unboxing since Java 5. –Bruno Sep 7 '10

This is my pillow Actual meaning of 'After all' My manager said I spend too much time on Stack Exchange. Returns: the double value represented by the [B]string argument.[/B] Throws: NumberFormatException - if the string does not contain a parsable double. If youre already converting those two variables into numbers you already have a double NOT a String! Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 YearOldest FirstNewest First Forum Index -> Java,Struts framework, Velocity, JSF, Hibernate, Servlet, JSP, javaBeans

Was This Post Helpful? 0 Back to top MultiQuote Quote + Reply #4 masijade D.I.C Addict Reputation: 196 Posts: 580 Joined: 03-April 10 Re: Convert Object to type double? I thought that a null Object would just yield a null Integer.... –Etienne de Martel Sep 7 '10 at 18:23 5 The NullPointerException will occur during the unboxing of Integer