StringUtilsisBlank
StringUtils isBlank is a utility method, commonly found in libraries like Apache Commons Lang, designed to check if a given string is null or empty. The method typically returns true if the string reference is null, or if it represents an empty string (i.e., a string with zero characters). It differs from a simple isEmpty check by also accounting for null values, preventing potential NullPointerExceptions.
The primary purpose of StringUtils.isBlank is to provide a convenient and safe way to handle strings that
When using StringUtils.isBlank, developers can avoid writing explicit null checks followed by empty string checks. For