closeDatabase()' on a null object reference
49
What is a NullPointerException, and how do I fix it?
59517
FATAL_ERROR|System.QueryException: List has no rows for assignment to SObject
110077
Is it good practice to NULL a pointer after deleting it?
72088
Why shouldn't we allow NULLs?
81624
Is returning null bad design?
43690
Where to close java PreparedStatements and ResultSets?
64200
Can Java's NullPointerException be changed to report on which variable was null?
29684
How to check if an object is nullable?
124471
Comparing nullable column values using "IS NULL" versus "= NULL"
34197
Should I Dispose() DataSet and DataTable?
96046
Static fields on a null reference in Java
140738
Does setting Java objects to null do anything anymore?
43769
How do I Parameterize a null string with DBNull.Value clearly and quickly
48512
Placing null at the end of the List
114718
Is there a DBMS that allows the "= NULL" syntax?
87189
System.NullPointerException
32059
What is \null and when do we need to use it?