質問編集履歴
1
文法および
test
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「,」「空白」を除いた状態で検索結果が表示したい
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test
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以下のコードでEclipseで起動すると
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結果は
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「一致した部分は : reading,but
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一致した部分は : Rabbit
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一致した部分は : remarkable in that
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一致した部分は : Rabbit
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一致した部分は : Rabbit
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一致した部分は : rabbit
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一致した部分は : ran across the field after it
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一致した部分は : rabbit
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と表示されますが、
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「reading,but」「remarkable in that」「ran across the field after it」の３つをよく見ると
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「,」「空白」が正規表現で引っかかってしまいます。
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以下の２つの正規表現でやってみましたが
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今度は何も引っかかりませんでした。
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Strnig regex＝"^r.*t$"；
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String regex1="^R.*t$";
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rで始まりtで終わる単語のこの他に使える正規表現を教えてください。
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```Java
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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public class Main {
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public static void main(String[] args) {
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String regex = "\br.*?t\b";
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//rで始まりｔで終わる正規表現
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Pattern p = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);
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//Pattern.CASE_INSENSITIVE は大文字と小文字を無視する
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Matcher m = p.matcher(text);
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/*変数Pの条件でtextを正規表現検索する*/
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while (m.find()) {
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System.out.println("一致した部分は : " + m.group());
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}
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}
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public static String text = "Alice was beginning to get very tired of sitting by " + "her sister on the bank, and of having nothing to do: once or " + "twice she had peeped into the book her sister was reading, but " + "it had no pictures or conversations in it, `and what is the use " + "of a book,\' thought Alice `without pictures or conversation?\'\n" + "So she was considering in her own mind (as well as she could, " + "for the hot day made her feel very sleepy and stupid), whether " + "the pleasure of making a daisy-chain would be worth the trouble " + "of getting up and picking the daisies, when suddenly a White " + "Rabbit with pink eyes ran close by her.\nThere was nothing so " + "very remarkable in that; nor did Alice think it so very much " + "out of the way to hear the Rabbit say to itself, `Oh dear! " + "Oh dear! I shall be late!\' (when she thought it over afterwards, " + "it occurred to her that she ought to have wondered at this, but " + "at the time it all seemed quite natural); but when the Rabbit " + "actually took a watch out of its waistcoat-pocket, and looked " + "at it, and then hurried on, Alice started to her feet, for it " + "flashed across her mind that she had never before seen a rabbit " + "with either a waistcoat-pocket, or a watch to take out of it, " + "and burning with curiosity, she ran across the field after it, " + "and fortunately was just in time to see it pop down a large " + "rabbit-hole under the hedge.";
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