I do not understand how to remove the null pointer exception
49
What is a NullPointerException, and how do I fix it?
87189
System.NullPointerException
79477
Why is "null" present in C# and Java?
45196
Calling class method through NULL class pointer
72675
I don't understand why this is causeing my program to crash?
15113
How to use an array list in Java?
9774
UnsupportedOperationException with ArrayAdapter.remove
88563
Exception cannot be converted to Throwable
146476
Java: Why aren't NullPointerExceptions called NullReferenceExceptions?
66284
NullPointerException when Creating an Array of objects
289
What is a NullReferenceException, and how do I fix it?
56124
Why do I get "Exception; must be caught or declared to be thrown" when I try to compile my Java code?
133947
How to catch an Exception from a thread
138823
Why cast null to Object?
96046
Static fields on a null reference in Java
35129
Why does String.valueOf(null) throw a NullPointerException?
101146
Why can't I write Nullable>?