stringisBlank
StringisBlank is a boolean predicate used in programming to determine whether a string should be considered blank. It typically returns true when the input is null, empty, or consists solely of whitespace characters. Some libraries treat null as blank, while others treat null as invalid input and return false or throw an error.
The common definition of blank relies on whitespace classification. Whitespace includes spaces, tabs, newlines, and many
Implementations that resemble StringisBlank appear in many languages, often under different names. In Java, a built-in
Usage considerations include performance and correctness. A robust StringisBlank usually scans characters to detect any non-whitespace
See also: isEmpty, trim, whitespace, null-safety, String.isBlank, StringUtils.isBlank.