Top "Nullpointerexception" questions

The Java exception thrown when an application attempts to use null in a case where an object is required.

Null check chain vs catching NullPointerException

A web service returns a huge XML and I need to access deeply nested fields of it. For example: return …

java exception nullpointerexception null custom-error-handling
Returning null as an int permitted with ternary operator but not if statement

Let's look at the simple Java code in the following snippet: public class Main { private int temp() { return true ? null : 0; // …

java nullpointerexception conditional-operator autoboxing
JavaFX - getScene() returns null

I just started using JavaFX Scene Builder to build a small application. It is made up of a controller class …

java nullpointerexception javafx-8
NullPointerException in custom adapter getView

I'm coding a custom adapter for a ListView that has a custom list to it. obviously, I have to write …

android nullpointerexception listadapter
Unboxing a null boxed object throws unexpected NullPointerException

If you run the following code, public class Foo{ public static void main(String[] args){ int id = new Bar().getId(); // …

java eclipse nullpointerexception unboxing
Unable to resume activity

I am novice and trying to allow my ListView to refresh after my SQLite DB is updated. I am not …

android android-listview nullpointerexception simplecursoradapter onresume
Android app force closes when setting a CursorAdapter

I am following a video tutorial on Udemy.com from here Everything has gone well up until messing with SQL. …

android nullpointerexception simplecursoradapter android-cursoradapter
Google-guava checkNotNull and IntelliJ IDEA's "may produce java.lang.NullPointerException"

Is there any way to suppress this warning: MyClass object = null; /*Some code that 'might' set this object but I …

intellij-idea nullpointerexception guava inspection
Maven versions-maven-plugin versions plugin 2.2 -- Maven Uncle Situation

Maven is 3.1.0. I'm using versions-maven-plugin:2.2 in my project's pom.xml (as shown below). Apart from the usual pom.xml file …

maven nullpointerexception release maven-release-plugin versions-maven-plugin