Java Tutorial/Development/Matcher — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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(нет различий)
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Текущая версия на 18:29, 31 мая 2010
Matcher Find
<source lang="java">
import java.util.regex.Matcher; import java.util.regex.Pattern; public class MainClass {
public static void main(String[] args) { Matcher m = Pattern.rupile("\\w+").matcher("Today is Sunday"); while (m.find()) System.out.println(m.group()); int i = 0; while (m.find(i)) { System.out.print(m.group() + " "); i++; } }
} /* */</source>
Today is Sunday Today oday day ay y is is s Sunday Sunday unday nday day ay y
Matcher.LookingAt
<source lang="java">
import java.util.regex.Matcher; import java.util.regex.Pattern; public class MainClass {
public static void main(String[] args) { String[] input = new String[] { "Java has regular expressions in 1.4", "regular expressions now expressing in Java", "Java represses oracular expressions" }; Pattern p1 = Pattern.rupile("re\\w*"), p2 = Pattern.rupile("Java.*"); for (int i = 0; i < input.length; i++) { System.out.println("input " + i + ": " + input[i]); Matcher m1 = p1.matcher(input[i]), m2 = p2.matcher(input[i]); if (m1.lookingAt()) // No reset() necessary System.out.println("m1.lookingAt() start = " + m1.start() + " end = " + m1.end()); } }
} /*
- /</source>
input 0: Java has regular expressions in 1.4 input 1: regular expressions now expressing in Java m1.lookingAt() start = 0 end = 7 input 2: Java represses oracular expressions
Matcher Start and End
<source lang="java">
import java.util.regex.Matcher; import java.util.regex.Pattern; public class MainClass {
public static void main(String[] args) { String[] input = new String[] { "Java has regular expressions in 1.4", "regular expressions now expressing in Java", "Java represses oracular expressions" }; Pattern p1 = Pattern.rupile("re\\w*"), p2 = Pattern.rupile("Java.*"); for (int i = 0; i < input.length; i++) { System.out.println("input " + i + ": " + input[i]); Matcher m1 = p1.matcher(input[i]), m2 = p2.matcher(input[i]); while (m1.find()) System.out.println("m1.find() "" + m1.group() + "" start = " + m1.start() + " end = " + m1.end()); } }
} /*
- /</source>
input 0: Java has regular expressions in 1.4 m1.find() "regular" start = 9 end = 16 m1.find() "ressions" start = 20 end = 28 input 1: regular expressions now expressing in Java m1.find() "regular" start = 0 end = 7 m1.find() "ressions" start = 11 end = 19 m1.find() "ressing" start = 27 end = 34 input 2: Java represses oracular expressions m1.find() "represses" start = 5 end = 14 m1.find() "ressions" start = 27 end = 35