Quick Answer: Does EqualsIgnoreCase Handle Null?

Is Empty the same as null?

Null vs.

So, in review: Null means the variable does not exist.

Empty means it exists, but it contains no value.

Zero length means an array or similar structure has been declared — and, if the language is strongly typed, has type — but contains no values..

Is null or empty Java?

isEmpty(String str) – Checks if a String is empty (“”) or null. StringUtils. isBlank(String str) – Checks if a String is whitespace, empty (“”) or null.

Is string null Java?

It checks it using a null check using != null and isEmpty() method of string. In plain terms, if a string isn’t a null and isEmpty() returns false , it’s not either null or empty. Else, it is.

Does StringUtils isNotEmpty check for NULL?

isNotEmpty() is used to find if the String is not empty/String is length 0 and not null. StringUtils. … It not only checks if the String is not empty and not null, but also checks if it is not only a whitespace string.

Is empty or null PHP?

PHP empty() Function The empty() function checks whether a variable is empty or not. This function returns false if the variable exists and is not empty, otherwise it returns true.

Is equalsIgnoreCase null safe?

equalsIgnoreCase(null); will definitely result in a NullPointerException. So equals methods are not designed to test whether an object is null, just because you can’t invoke them on null . Never had any issues doing it this way, plus it’s a safer way to check while avoiding potential null point exceptions.

Is StringUtils equalsIgnoreCase null safe?

It is null safe. It rarely has to use the more expensive string. … Compare two string using equals(-,-) and equalsIgnoreCase(-,-) method of Apache Commons StringUtils class.

Can string values null?

A string can be empty or have a null value. … This is because if a string is empty, it still returns a length of 0.

Does StringUtils isEmpty check for NULL?

StringUtils isEmpty = String isEmpty checks + checks for null. StringUtils isBlank = StringUtils isEmpty checks + checks if the text contains only whitespace character(s).

How do you check if a string is null?

To check if a string is null or empty in Java, use the == operator.

Should I use null or empty string?

If an empty string is a valid value for the field in question, then expect it and code for it; if not, use null.

Is string empty the same as null C#?

C# | IsNullOrEmpty() Method A string will be null if it has not been assigned a value. A string will be empty if it is assigned “” or String. Empty (A constant for empty strings).