method 'boolean java.lang.String.isEmpty()' on a null object reference
49
What is a NullPointerException, and how do I fix it?
128709
Why is there a `null` value in JavaScript?
104501
How do I enforce null checking?
126231
How can I manage the onslaught of null checks?
151469
What is the difference between null and System.DBNull.Value?
5975
How to avoid returning a Null if there is no "else" condition in an If construct
39781
Why does the is operator return false when given null?
114816
Is null reference possible?
145303
Equivalent of !$A.util.isEmpty() in LWC
127005
' ... != null' or 'null != ....' best performance?
89755
Why is "throw null" not creating a compilation error in Java?
87728
ArgumentNullException or NullReferenceException from extension method?
24249
When is the Killing form null?
70161
How do I check if my EditText fields are empty?
96453
Caught Throwable or Exception is null
64200
Can Java's NullPointerException be changed to report on which variable was null?
89714
What is the difference between Nullable.HasValue or Nullable != null?