Can't solve NullPointerException problem (using interface)
49
What is a NullPointerException, and how do I fix it?
124773
NullPointerException when calling service in onResume
78238
Nullable type is not a nullable type?
103526
TypeLoadException says 'no implementation', but it is implemented
41010
Programming to an interface. How to decide where its needed?
116081
How can I refer to the class type a interface is implementing in Java?
28797
"Unknown class  in Interface Builder file" error at runtime
85964
Android: ClassNotFoundException when passing serializable object to Activity
149666
Why can't a null-reference exception name the object that has a null reference?
85865
Optional Methods in Java Interface
1605
What is the reason behind "non-static method cannot be referenced from a static context"?
66284
NullPointerException when Creating an Array of objects
13711
java.lang.NullPointerException at org.glassfish.hk2.classmodel.reflect.impl.TypesImpl.getType
64332
avoiding null reference exceptions
127485
Cannot convert []string to []interface {}
7534
Java error: class, interface, or enum expected
132306
Java - Interface, instantiating an interface?