String.ValueOf() to replace NULL with string null when calling a method
49
What is a NullPointerException, and how do I fix it?
115607
Why doesn't String switch statement support a null case?
48235
Setting Objects to Null/Nothing after use in .NET
121399
Changed behavior of string.Empty (or System.String::Empty) in .NET 4.5
148793
Checking Textbox Text for Null
139747
How can I get the values of the parameters of a calling method?
8808
Strange Java null behavior in Method Overloading
24249
When is the Killing form null?
124080
How does the assignment of the null literal to a System.Nullable type get handled by .Net (C#)?
2116
IllegalArgumentException or NullPointerException for a null parameter?
98908
Is it good practice to set variables to null when they are no longer needed?
94300
Why does the Replace() string method not modify my string variable?
75247
Convert string to nullable type (int, double, etc...)
86486
StringBuilder vs String concatenation in toString() in Java
72088
Why shouldn't we allow NULLs?
81518
Find out what variable is throwing a NullPointerException programmatically
19902
Shortcut for "null if object is null, or object.member if object is not null"