Getting null object reference but ArrayList is initialized
49
What is a NullPointerException, and how do I fix it?
55274
Java: Exception itself is null
289
What is a NullReferenceException, and how do I fix it?
89755
Why is "throw null" not creating a compilation error in Java?
79586
System.NullPointerException: Attempt to de-reference a null object
141129
InputStream returning NullPointerException (Java)
10581
Avoiding NullPointerException in Java
64332
avoiding null reference exceptions
53085
How to initialize List object in Java?
19198
Does assigning objects to null in Java impact garbage collection?
10867
How to avoid ArrayIndexOutOfBoundsException or IndexOutOfBoundsException?
94342
Java - class.getResource returns null
37988
System.NullPointerException: Attempt to de-reference a null object:
36203
Why isn't ArrayList marked [Obsolete]?
81518
Find out what variable is throwing a NullPointerException programmatically
81565
getClass().getResource() always returning null
106257
What are the possible problems caused by adding elements to unsynchronized ArrayList's object by multiple threads simultaneously?