java字符串常用方法

public class StringUtils {

private static final Pattern pattern_emoji = Pattern.compile ("[\ud83c\udc00-\ud83c\udfff]|[\ud83d\udc00-\ud83d\udfff]|[\u2600-\u27ff]",
Pattern.UNICODE_CASE | Pattern.CASE_INSENSITIVE );
//判断字符串是否包含emoji表情符号
public static final boolean isContainEmoji(String str) {
Matcher emojiMatcher = pattern_emoji.matcher(str);
return emojiMatcher.find();
}
}