Object reference not set to an instance of an object. NullReferenceException occured
289
What is a NullReferenceException, and how do I fix it?
142913
How do you get the "object reference" of an object in java when toString() and hashCode() have been overridden?
46857
Compiler warning: null reference exception
9683
How to use GetSObject to retrieve related data in a null safe manner?
85964
Android: ClassNotFoundException when passing serializable object to Activity
43446
JSONException: Value of type java.lang.String cannot be converted to JSONObject
2116
IllegalArgumentException or NullPointerException for a null parameter?
80299
Java Error: Cannot make a static reference to the non-static method
9073
Cannot make a static reference to the non-static method
48221
Solving "The ObjectContext instance has been disposed and can no longer be used for operations that require a connection" InvalidOperationException
103911
Cross Reference problem
10818
NullPointerException : println needs a message in android
92797
How to debug NullPointerException in selenium-java
98866
Null Pointer Exception on getGraphics()
127599
Odd situation for "cannot reference this before supertype constructor has been called"
599
Is Java "pass-by-reference" or "pass-by-value"?
22952
How to fix the Hibernate "object references an unsaved transient instance - save the transient instance before flushing" error