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JSF - selectonemenu (nullPointer)
by k19k in Programming Languages

Form snippet:


<h:selectOneMenu id="supervisor" value="#{newTopic.supervisor}">
<s:objectConverter/>
<f:selectItems value="#{supervisors}" var="_supervisor"
itemValue="#{_supervisor}"
itemLabel="#{_supervisor.name.firstName} #{_supervisor.name.lastName}

JSP pageContext Nullpointer
by Rob M in Programming Languages

I'm trying to build a common class for my JSP TagLib classes
I have


class MyTag extends CustomTag
{
public int doEndTag()
{
JspWriter out = pageContext.getOut(); <-- this one works fine
}
}
class CustomTag extends BodyTagSupport
{
public CustomTag()
{
JspWriter out = pageContext.getOut(); &

NullPointer while using Cursor
by Miklebud in Programming Languages

I couldn't find a suitable title for my question. Here is the problem... After syso'ing the statement in getData(), it should print the values in the cursor, cMainTable, using the statement in displayDataForMainTable(). But, it doesn't. There are no exceptions, and errors. I have also kept the output that i get in the LogCat. Can someone help


Nullpointer exception :
by lxskllr in Programming Languages

There is a possiblity that this may be a dupicate question.
I initialize a String variable to null.I may or may not update it with a value.Now I want to check whether this variable is not equal to null and whatever I try I get a null pointer exception.I can't afford to throw nullpointer exception as it is costly.Is there any workaround that is efficient.TIA


NullPointer in everything I do in onPostExecute
by CodeAndLearn in Programming Languages

I have to update an expandableList from server, I am using asyncTask to download and fill new values in local database, everything is done in doInBackground but after its done I tried to refresh my expandableList in onPostExecute but I am getting a nullPointer on the very statement which runs fine before loading new data. All I am doing is calling the same method which instializes expandableLi


ios : Nullpointer exception
by sarah in Web Design

I got the following code:


- (void) hide_waiting_activity
{
[UIView beginAnimations:nil context:NULL]; {
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationDuration:.5];
self.waiting_view.alpha = 0;
self.waiting_label.alpha = 0;
self.activity_indicator.alpha = 0;

Nullpointer Exceptions
by Colin Henry in Programming Languages

I have been following some android tutorials on the web. I tried copying his code to the best of my ability but whenever I run the application it crashes. I looked through the console and found it was a Nullpointer exception that caused it. The application is meant to play a sound and then close and then go to another layout.
Here is my code, please tell me what I did wrong.
packa


Nullpointer exception when trying to use Bluetooth
by destrekor in Programming Languages

I'm trying to create an Android application that uses the Bluetooth of the device. However, when I try to emulate the application, it gives me this error: unfortunately Application has stopped.


I've searched for a solution but for the problem, and I've done the following:


Use an actual device instead of the emulator since Bluetooth functionality cannot be emulated
Modi

NullPointer in an Class array
by Edo in Programming Languages

I have two java classes. Schedule is the main class that uses an array of Jobs called deadline. I'm having problems putting anything in array. I have a for loop that reads data from a text file (it works fine) and inserts certain data into deadline. I not successfully creating deadline because whenever I want to start inserting into the array I get a <


NullPointer on an Android layout?
by Dmitry in Android

I'm getting this error:


java.lang.NullPointerException
Exception details are logged in Window > Show View > Error Log

when trying to edit a layout in the GUI. I stopped working on this project a while ago, but I'm coming back to it, but it seems uneditable. Any tips?


The Error Log says


"eclipse.buildId=M20120914-1800

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