reversing the screen including null and an empty string
49
What is a NullPointerException, and how do I fix it?
134689
Setting an object to null vs Dispose()
79162
Javascript null or empty string does not work
67675
Whats the best way to recursively reverse a string in Java?
19438
How to convert a char array back to a string?
60409
Can I force screen blank and ignore input?
138823
Why cast null to Object?
23756
Why does one often see "null != variable" instead of "variable != null" in C#?
132398
What is null in Java?
68713
Why is it Valid to Concatenate Null Strings but not to Call "null.ToString()"?
140738
Does setting Java objects to null do anything anymore?
123797
Not equal  != operator on NULL
115607
Why doesn't String switch statement support a null case?
49758
Simplest way to set cursor to wait, then have all elements revert back
38241
How do I check for nulls in an '==' operator overload without infinite recursion?
114816
Is null reference possible?
126231
How can I manage the onslaught of null checks?