Is empty and null check in 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.

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

Static methods are callable with a reference of the null type. You cannot call non-static methods with a reference of the null type. You can use == and != comparisons with null types in Java .

Static methods are callable with a reference of the null type. You cannot call non-static methods with a reference of the null type. You can use == and != comparisons with null types in Java .