如何在 Java 中扫描不包括标点符号的单词

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class WordScanner {
    public static void main(String[] args) {
        String text = "Hello, world! This is a test.";
        Pattern pattern = Pattern.compile("[a-zA-Z]+");
        Matcher matcher = pattern.matcher(text);

        while (matcher.find()) {
            System.out.println(matcher.group());
        }
    }
}

Hello
world
This
is
a
test