使用Java从字符串中提取标记

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

public class Main {
    public static void main(String[] args) {
        String input = "This is a sample text with some tags <tag1> <tag2> <tag3>";
        String patternString = "<(.*?)>";

        Pattern pattern = Pattern.compile(patternString);
        Matcher matcher = pattern.matcher(input);

        while (matcher.find()) {
            String tag = matcher.group(1);
            System.out.println("Tag: " + tag);
        }
    }
}

Tag: tag1
Tag: tag2
Tag: tag3

public class Main {
    public static void main(String[] args) {
        String input = "This is a sample text with some tags <tag1> <tag2> <tag3>";

        // 使用split()方法提取标记
        String[] tags = input.split("<|>");
        for (String tag : tags) {
            if (!tag.isEmpty()) {
                System.out.println("Tag: " + tag);
            }
        }

        // 使用substring()方法提取标记
        int startIndex = input.indexOf("<");
        int endIndex = input.indexOf(">", startIndex);
        while (startIndex != -1 && endIndex != -1) {
            String tag = input.substring(startIndex + 1, endIndex);
            System.out.println("Tag: " + tag);

            startIndex = input.indexOf("<", endIndex);
            endIndex = input.indexOf(">", startIndex);
        }
    }
}

Tag: tag1
Tag: tag2
Tag: tag3