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How to count the number of words in a string?

What about this question? It is mainly aimed at the case of English strings. Although there can be white space characters in Chinese strings, there is no such thing as words.

Public class CountNumberOfWordsInString {public static void main (String [] args) {countNumberOfWords ("My name is Wanger"); countNumberOfWords ("I Love Java Programming"); countNumberOfWords ("Java is very important");} private static void countNumberOfWords (String line) {String trimmedLine = line.trim (); int count = trimmedLine.isEmpty ()? 0: trimmedLine.split ("\\ s +"). Length System.out.println (count);}}

The output is as follows:

4 4 4

The split () method splits strings, and the arguments can be not only spaces, but also white space characters (multiple spaces, tabs) replaced by regular expressions; an array is returned, and the number of words can be obtained through length.

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