Socket is returning null when executing isConnected()
49
What is a NullPointerException, and how do I fix it?
53309
Why does 'fopen' return a NULL pointer?
12296
How can I return NULL from a generic method in C#?
45869
Why null cast a parameter?
38443
ExecuteReader requires an open and available Connection. The connection's current state is closed
5193
What causes the 'Connection Refused' message?
81624
Is returning null bad design?
152510
Why is document.GetElementById returning null
30161
java.net.SocketException socket is closed
104501
How do I enforce null checking?
32664
How to use java.net.URLConnection to fire and handle HTTP requests?
143243
Is NULL always false?
134689
Setting an object to null vs Dispose()
141129
InputStream returning NullPointerException (Java)
150362
How to find the socket connection state in C?
53486
How to catch a "connection reset by peer" error in C socket?
81565
getClass().getResource() always returning null