"Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException" on button press
49
What is a NullPointerException, and how do I fix it?
146708
Error sending edittext in java server. See code
13711
java.lang.NullPointerException at org.glassfish.hk2.classmodel.reflect.impl.TypesImpl.getType
31537
Checking for null before event dispatching... thread safe?
58054
When is it OK to catch NullPointerException?
113741
Using onClick attribute in layout xml causes a NoSuchMethodException in Android dialogs
106257
What are the possible problems caused by adding elements to unsynchronized ArrayList's object by multiple threads simultaneously?
140738
Does setting Java objects to null do anything anymore?
11494
Swing, Java and multithreading, and coloring buttons
98866
Null Pointer Exception on getGraphics()
55274
Java: Exception itself is null
78586
Why doesn't "System.out.println" work in Android?
97325
DialogFragment causing nullpointer crash
146476
Java: Why aren't NullPointerExceptions called NullReferenceExceptions?
29265
Swing GUI doesn't wait for user input
64332
avoiding null reference exceptions
133947
How to catch an Exception from a thread