如何在java中按空格和点分割

Question

I have many text like ' J.Depp is an American actor.' How can i split where J.Depp like " J. Depp" I write some code but it doesn't work

list.forEach(it -> {
        String[] s = it.split(" ");
        for (String temp : s) {
            if (temp.contains(".")) {
                String[] temp2 = temp.split(".");
               // 
            }
        }
        list2.add(s + " .");
    });

Answer 1

split takes a regexp, and . has special meaning. I suggest:

temp.split(Pattern.quote("."));

This way you can split on whatever you want. (Just temp.split("\\\\.") would also work, but the pattern quote variant is more readable and works for anything you care to split on, hence why you should write it that way.

Answer 2

String.replaceAll() will do the trick

temp.replaceAll("\\.", ". ");

To skip dots which already have the whitespace you may use non-capturing negative lookahead:

temp.replaceAll("\\.(?!\\s)", ". ");

See also Pattern reference.