Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression

/
/
gm

Test String

Code Generator

Generated Code

import java.util.regex.Matcher; import java.util.regex.Pattern; public class Example { public static void main(String[] args) { final String regex = "(^去机场$)|接送(机|服务)|送(到)?机(场|服务)"; final String string = "嗯,您一般怎么去机场。\n" + "怎么去机场?\n" + "想不通八十中机场吗下还是一月画画,数学电视能想课程要宝宝机构。\n" + "再给我送机场。\n" + "去机场叫的士。\n" + "帮我现在一次在楼下去机场。\n" + "额,我说我这会退票,呃退房要去机场,如果需要查房,你那服务员现在上来啊。\n" + "不用了,不用了,就是现金早餐,我就在到机场坐飞机来好吗?\n" + "啊,你好,我想咨询一下,就是那个,嗯,我我老是是同一间房间,然后我老是明天是赶飞机,我想我明天可以帮她办一下退房吗?\n" + "嗯,去机场怎么走啊?怎么酒店?\n" + "你说的飞机电话。\n" + "温州机场吗?回家音乐。\n" + "给我送到机场。\n" + "去机场\n" + "机场?\n" + "去机场。\n" + "我们那个飞机,谢谢啊。\n" + "就是把床单被套整套换了最后在在要西城地板机场。\n" + "麻烦机场总台。\n" + "去机场要多久?\n" + "来不了也没有车,方便过去不稳,同样就座是不是不免不是没有了,不再那边那里医院的那里吧,那一个什么,什么阴阳桃林机场在这个就是。\n" + "喂,那个我咱们这有机场大巴吗?\n" + "您好,麻烦帮三零二多送一床被子。这里飞机太薄了。\n" + "飞机?\n" + "嗯,空调丰富开到机场。\n" + "去机场要多久?\n" + "机场台下。\n\n\n\n" + "啊,八零八房间马上给送机瓶水了。\n" + "呃,送机矿泉水,谢谢。\n" + "投影仪,可不可以连接手机。\n" + "请给我接送服务。不。\n" + "再给我送机场。\n" + "接送服务。\n" + "给我送给我接送餐服务。\n" + "帮我接机不。\n" + "麻烦送机桶水吧。\n" + "转接转接送餐电话。\n" + "你好,是幺零零六送机瓶水吧。\n" + "请接机。\n" + "不要送洗衣服有送机服务吗?\n" + "你好,能接送明天吗?\n" + "嗯,接送机。\n" + "我送机没看出水吗?\n" + "体重称九幺六房接送一下。\n" + "你们有没有接送机啊。\n" + "接送。\n" + "有人接给我送两个手机就行了。\n" + "给我安排的接送机。\n" + "请转接送餐服务的电话?\n" + "为送机瓶水。\n" + "那个接下总机。\n" + "我需要那个帮我送机瓶水。\n" + "嗯,转接送餐服务。\n" + "接下总机。\n" + "嗯,有那个送机水好吧,这个房间没水的。\n" + "您好,八幺八房间帮我拿送机的话是上来行吗?\n" + "送机瓶水。\n" + "送机服务人工。\n" + "接送不。\n" + "没有叫他直接送到七二一房间就可以了。\n" + "接送车。\n" + "您好,接前台,然后送手机带过来。\n" + "没有,就是直接输入手机号完了那个来验证吗,验证一下就可以了事那意思不。\n" + "在给我接下机。\n" + "接总机就手机。\n" + "与接送的是浴巾两条浴巾,谢谢,能尽快吗?\n" + "请接总台总机总台。\n" + "哎,你好,可以帮我送机送冲个天吗?\n" + "送送机。\n" + "嗯,送机,即到给我。\n" + "嗯,连接送台。\n" + "转接总机。\n" + "送机瓶水。\n" + "我接总机那个前台。\n" + "接总机。\n" + "哦,我这个电视我要连接usb播放我手机的视频是怎么操作的,我这边不会弄,你可以叫人上来帮我弄吗?\n" + "酒店有送机服务吗?\n" + "嗯,接机前台。\n" + "我那个七五给送的矿泉水房间没打扫机送机行吗?\n" + "我,我在房间里就不行,送机瓶水。\n" + "嗯,我需要一副一次性剃须刀,你们这有配吗?有的话就帮我送上来,直接送房里。"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE); final Matcher matcher = pattern.matcher(string); while (matcher.find()) { System.out.println("Full match: " + matcher.group(0)); for (int i = 1; i <= matcher.groupCount(); i++) { System.out.println("Group " + i + ": " + matcher.group(i)); } } } }

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Java, please visit: https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html