如何使用Java库进行Unicode编码的转换

?Java?,???????????????Unicode?????

1. ???????Unicode??:

public class UnicodeConverter {
    public static void main(String[] args) {
        String input = "Hello, ??!";
        String unicode = toUnicode(input);
        System.out.println("Unicode: " + unicode);
    }

    public static String toUnicode(String input) {
        StringBuilder builder = new StringBuilder();
        for (char ch : input.toCharArray()) {
            builder.append(String.format("\\ux", (int) ch));
        }
        return builder.toString();
    }
}

2. ?Unicode????????:

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

public class UnicodeConverter {
    public static void main(String[] args) {
        String unicode = "Hello, \?\?!";
        String output = fromUnicode(unicode);
        System.out.println("Output: " + output);
    }

    public static String fromUnicode(String unicode) {
        Pattern pattern = Pattern.compile("(\\\\u(\\p{XDigit}{4}))");
        Matcher matcher = pattern.matcher(unicode);
        char ch;
        while (matcher.find()) {
            ch = (char) Integer.parseInt(matcher.group(2), 16);
            unicode = unicode.replace(matcher.group(1), ch + "");
        }
        return unicode;
    }
}

???????????????????Unicode???????Unicode??????????????????????????????