Java, as an object-oriented programming language, often requires its users to validate objects or variables against a null value. Checking for nulls helps us avoid NullPointerExceptions, a common ...

The StringUtils.isNotBlank(String) static method does exactly what we wanted in this particular case: check a String to ensure it is not null, not empty, and not white space only.

Learn how to use different methods to check if a string is empty or null in shell script, and see some examples of how to use them in your scripts. Skip to main content LinkedIn.