nullpointerexception
NullPointerException in push() method of Stack in Java
How to I incorporate NullPointerException in the following push() method for a stack in Java? public void push(E e) {[详细]
2023-03-29 20:46 分类:问答NullPointerException on calling a public method from another activity
I have an Activity SaveData.class with a public method addEvent() use to add some information in a DataBase table as follows:[详细]
2023-03-29 19:12 分类:问答NullPointerException While Parsing XML
I have followed the tutorial found here, and I am getting a NullPointerException.I\'ve searched on StackOverflow and Google for a possible solution to this, but to no avail.Below you will see my code[详细]
2023-03-29 15:40 分类:问答Android Null Pointer Exception Madness?
So I have 3 Activities that need to all have access to the same custom class object (let\'s call it \'a\') created by me when the very first Activity is created.[详细]
2023-03-29 12:26 分类:问答What can I do to avoid a NullPointerException?
I am trying to authenticate user by sending a key and a random number from the client to the server. My code is not displaying me the response from the client. I am getting a Null Pointer Exception w[详细]
2023-03-29 06:14 分类:问答Reading a very large local XML file using GWT
I am building my first Java application using GWT which must read in data from a very large XML file. I am having issues when I try sending a request for the information in the file, and I\'m not quit[详细]
2023-03-28 05:24 分类:问答Clearing Shared Preferences throws a Null Pointer Exception
I am getting a null pointer exception every time the user selects \"logout\" (R.Id.logout) from the option menu.I can\'t figure out what I\'m not initialising.[详细]
2023-03-28 04:29 分类:问答Exception in thread "main" java.lang.NullPointerException [duplicate]
This question already has answers here: What is a NullPointerException, and how do I fix it? (12 answers)[详细]
2023-03-28 03:55 分类:问答Invalidate() causes NULL POINTER exception on programmatically addedd control (c#)
When I add a PictureBox to my form like this: public partial class frmMain : Form { PictureBox _pb; public formMain(){[详细]
2023-03-28 03:20 分类:问答android function in class throws java.lang.NullPointerException
I\'ve mad开发者_C百科e a class which holds some string and integers, in that class I made a function to convert the data in the class in to a readable string;[详细]
2023-03-27 18:56 分类:问答