Java by API/java.util.regex/Pattern
Содержание
Pattern.CANON_EQ
<source lang="java">
/* égal matches input égal égal matches input e?gal égal does not match input e?gal égal does not match input e"gal égal does not match input e�gal
* */
import java.util.regex.Pattern; /**
* CanonEqDemo - show use of Pattern.CANON_EQ, by comparing varous ways of * entering the Spanish word for "equal" and see if they are considered equal by * the RE-matching engine. * * @version $Id: CanonEqDemo.java,v 1.3 2004/03/21 20:06:20 ian Exp $ */
public class MainClass {
public static void main(String[] args) { String pattStr = "\u00e9gal"; // �gal String[] input = { "\u00e9gal", // �gal - this one had better match :-) "e\u0301gal", // e + "Combining acute accent" "e\u02cagal", // e + "modifier letter acute accent" "e"gal", // e + single quote "e\u00b4gal", // e + Latin-1 "acute" }; Pattern pattern = Pattern.rupile(pattStr, Pattern.CANON_EQ); for (int i = 0; i < input.length; i++) { if (pattern.matcher(input[i]).matches()) { System.out.println(pattStr + " matches input " + input[i]); } else { System.out.println(pattStr + " does not match input " + input[i]); } } }
}
</source>
Pattern.CASE_INSENSITIVE
<source lang="java">
/* IGNORE_CASE match true MATCH_NORMAL match was false
- /
import java.util.regex.Matcher; import java.util.regex.Pattern; public class MainClass {
public static void main(String[] argv) { String pattern = "^q[^u]\\d+\\."; String input = "QA777. is the next flight."; Pattern reCaseInsens = Pattern.rupile(pattern, Pattern.CASE_INSENSITIVE); Pattern reCaseSens = Pattern.rupile(pattern); boolean found; Matcher m; m = reCaseInsens.matcher(input); // will match any case found = m.lookingAt(); // will match any case System.out.println("IGNORE_CASE match " + found); m = reCaseSens.matcher(input); // Get matcher w/o case-insens flag found = m.lookingAt(); // will match case-sensitively System.out.println("MATCH_NORMAL match was " + found); }
}
</source>
Pattern: compile("[a-z]+")
<source lang="java">
/*
* Output:
Match: www Match: java Match: s Match: com
* */
import java.util.regex.Matcher; import java.util.regex.Pattern; public class MainClass {
public static void main(String args[]) { // Match lowercase words. Pattern pat = Pattern.rupile("[a-z]+"); Matcher mat = pat.matcher("www.jexp.ru."); while (mat.find()) System.out.println("Match: " + mat.group()); }
}
</source>
Pattern: compile("d.*ian")
<source lang="java">
import java.util.regex.Matcher; import java.util.regex.Pattern; public class MainClass {
public static void main(String[] args) { Pattern myRE = Pattern.rupile("d.*ian"); Matcher matcher = myRE.matcher("danian devonian dan"); matcher.lookingAt(); String result = matcher.group(0); System.out.println(result); }
}
</source>
Pattern: compile("e.+?d")
<source lang="java">
/*
* Output:
Match: extend Match: end
* */
import java.util.regex.Matcher; import java.util.regex.Pattern; public class MainClass {
public static void main(String args[]) { Pattern pat = Pattern.rupile("e.+?d"); Matcher mat = pat.matcher("extend cup end table"); while (mat.find()) System.out.println("Match: " + mat.group()); }
}
</source>
Pattern: compile(String text)
<source lang="java">
/*
* Output:
Matches No Match
* */
import java.util.regex.Matcher; import java.util.regex.Pattern; public class MainClass {
public static void main(String args[]) { Pattern pat; Matcher mat; boolean found; pat = Pattern.rupile("Java"); mat = pat.matcher("Java"); found = mat.matches(); if (found) System.out.println("Matches"); else System.out.println("No Match"); System.out.println(); mat = pat.matcher("Java 2"); found = mat.matches(); if (found) System.out.println("Matches"); else System.out.println("No Match"); }
}
</source>
Pattern: compile("(\\w+)\\s(\\d+)")
<source lang="java">
import java.util.regex.*; public class MainClass {
public static void main(String[] args) { Pattern patt = Pattern.rupile("(\\w+)\\s(\\d+)"); Matcher matcher = patt.matcher("Bananas 123"); matcher.lookingAt(); System.out.println("Name: " + matcher.group(1)); System.out.println("Number: " + matcher.group(2)); }
}
</source>
Pattern: matcher(String text)
<source lang="java">
/*
* Output:
Matches No Match
* */
import java.util.regex.Matcher; import java.util.regex.Pattern; public class MainClass {
public static void main(String args[]) { Pattern pat; Matcher mat; boolean found; pat = Pattern.rupile("Java"); mat = pat.matcher("Java"); found = mat.matches(); if (found) System.out.println("Matches"); else System.out.println("No Match"); System.out.println(); mat = pat.matcher("Java 2"); found = mat.matches(); if (found) System.out.println("Matches"); else System.out.println("No Match"); }
}
</source>
Pattern: split(String str)
<source lang="java">
/*
* Output:
Next token: www Next token: jexp Next token: com Next token: java Next token: javascript Next token: API Next token: example
* */
import java.util.regex.Pattern; public class MainClass {
public static void main(String args[]) { Pattern pat = Pattern.rupile("[ ,.!]"); String strs[] = pat.split("www.jexp.ru java javascript API example."); for (int i = 0; i < strs.length; i++) System.out.println("Next token: " + strs[i]); }
}
</source>