'boolean android.database.Cursor.moveToFirst()' on a null object reference
49
What is a NullPointerException, and how do I fix it?
151469
What is the difference between null and System.DBNull.Value?
143243
Is NULL always false?
641
Which overload will get selected for null in Java?
113199
@OneToOne(optional=false) and @JoinColumn(nullable=false) used together
37988
System.NullPointerException: Attempt to de-reference a null object:
88920
Is using NULL references OK?
26997
When does SQLiteOpenHelper onCreate() / onUpgrade() run?
134689
Setting an object to null vs Dispose()
48674
Why there is no getFirst(iterable) method?
65589
How will I be able to remove [NSNull Null] objects from NSMutableArray?
106
What is a void pointer and what is a null pointer?
110077
Is it good practice to NULL a pointer after deleting it?
129023
Null check in an enhanced for loop
19902
Shortcut for "null if object is null, or object.member if object is not null"
158391
Most efficient way to check for DBNull and then assign to a variable?
74699
MultiLine EditText in Android with the cursor starting on top