The analyzer has detected a strange regular expression, the use of which leads to a result different from what the programmer expects.
Consider the following example:
String[] arr = "Hot. Cool. Yours".split(".");After executing this line, the array will be lacking the expected elements {"Hot", " Cool", " Yours"}. Instead, it will be an empty array. This has to do with the fact that the dot is a special character in a regular expression and has its own purpose. To make a dot a separator in your string, use it as follows:
String[] arr = "Hot. Cool. Yours".split("\\.");The analyzer will also warn you if your regular expression consists only of these characters:
This diagnostic is classified as: