取代正则表达式组结果 - 是否可能？

Question

我想验证HTML链接，同时提取＆＃34; http / https＆＃34;，主机和地址部分。是否可以更改第1组值，如果它是＆＃34; https＆＃34; - 输出将是＆＃34; true＆＃34;值：

String url = "https://www.youtube.com/watch?v=1M9TJpLTcw8   ";

Pattern p = Pattern.compile("^(?i)(https?)://(.{3,}?)/(.*?) *$");//(?i) - for case insensitive
Matcher m = p.matcher(url);
if (m.find()) {
    System.out.println("g1: " + m.group(1));
    System.out.println("g2: " + m.group(2));
    System.out.println("g3: " + m.group(3));
}

输出结果为：

g1: https//But I want to replace it - when "http" - it would be "false", "https" - "true"
g2: www.youtube.com
g3: watch?v=1M9TJpLTcw8

Answer 1

怎么样？

g1 = "http".equals(m.group(1)) ? "false" : "true"

Answer 2

试试这个

System.out.println("g1: " + (m.group(1) != null && m.group(1).equals("https")) ? true : false);