why am i getting Attempt to invoke interface method 'int java.util.List.size()' on a null object reference?
49
What is a NullPointerException, and how do I fix it?
55274
Java: Exception itself is null
45869
Why null cast a parameter?
35129
Why does String.valueOf(null) throw a NullPointerException?
10867
How to avoid ArrayIndexOutOfBoundsException or IndexOutOfBoundsException?
43227
How to apply sizeof() operator to non-static class member methods?
2116
IllegalArgumentException or NullPointerException for a null parameter?
114816
Is null reference possible?
148820
C compile error: "Variable-sized object may not be initialized"
42612
Generics, arrays, and the ClassCastException
64332
avoiding null reference exceptions
140738
Does setting Java objects to null do anything anymore?
56124
Why do I get "Exception; must be caught or declared to be thrown" when I try to compile my Java code?
53085
How to initialize List object in Java?
61392
The cast to value type 'Int32' failed because the materialized value is null
39810
What is "string[] args" in Main class for?
37988
System.NullPointerException: Attempt to de-reference a null object: