I\'m getting Null Pointer Exceptions when I try to run the following block of code which is supposed to print out a list of books stored in a txt file. (The \"roundabout\" implementation of first havi
The program I\'m writting is to make 4 robot with a rectangular shape with a line pointing north,south,east,west. There are 4 buttons (moveForward,moveBackward,turnLeft,turnRight).
I am getting a NullPointerException on line 27 (listOfWindTurbines.addItemListener(new dropDownListener());) when I try to run my program. Please Help!
Well, my program keeps giveing me a null point exception and I don\'t know why? I know it has something to do with the lvl variable, but I don\'t know what? What can I do to fix this problem?
I\'m working on a JSP page, but I\'m running into a null pointer at run time. In an attempt to isolate the problem, I hard-coded the expected variable response instead of using a getter (it was previo
Hi I have got some code that is reported as having the NP_GUARANTEED_DEREF issue by Findbugs. Now looking at my code I don\'t quite understand what is wrong with it, can a开发者_如何转开发nyone sugges
A raw computer basically just has memory with physical addresses starting at 0, right? Then someone could write assembly code (such as a BIOS) and actually put a value at 0.
I\'m writing an app for android that needs to parse data from an XML file. I\'ve never come across an error like this that is so impossibly hard to track down. Or maybe my brain just stopped working.
I am getting this error when running junit test Testcase: testGet_User(Authentication.UserManagerTest):Caused an ERROR
I have a little function (in a DLL) wh开发者_如何学JAVAich looks like this: int my_function(const char* const s)
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