Web Reference: Jan 27, 2017 · To get the length convert to a string first: length is a method of String, so you can for example do. (stringVar.length != 10) ... But I'd recommend the usage of Apache Commons Lang3 StringUtils, because it's methods are always null-aware. For example. (StringUtils.length(stringVar) != 10) ... Jan 4, 2025 · string.length () : length () method is a final method which is applicable for string objects. The length () method returns the number of characters present in the string. If you don't want others (or yourself) to overwrite existing values, use the final keyword (this will declare the variable as "final" or "constant", which means unchangeable and read-only):
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