'java.net.Socket java.net.ServerSocket.accept()' on a null object reference
49
What is a NullPointerException, and how do I fix it?
30265
java.net.SocketException: Connection reset
33103
How come invoking a (static) method on a null reference doesn't throw NullPointerException?
101146
Why can't I write Nullable>?
78238
Nullable type is not a nullable type?
128142
java.lang.NullPointerException at org.apache.jsp.foo_jsp._jspInit(foo_jsp.java:22)
48235
Setting Objects to Null/Nothing after use in .NET
92187
Unable to cast object of type 'System.DBNull' to type 'System.String`
27700
Why my Java server close sockets?
65483
Java socket/serialization, object won't update
35590
How to fix NullPointerException in Java?
70532
NullReferenceException after POST
79477
Why is "null" present in C# and Java?
144544
How to handle NULL values when inserting with the Dataloader(.io)
104501
How do I enforce null checking?
69771
NullPointerException when setting attribute?
2116
IllegalArgumentException or NullPointerException for a null parameter?