Ago: Uus lehekülg: ' import java.util.regex.Matcher; import java.util.regex.Pattern; public class XmlParsingExample { public static void main(String[] args) { String xml = ...'

2015-03-27T08:52:46Z

Uus lehekülg: '<source lang="java"> import java.util.regex.Matcher; import java.util.regex.Pattern; public class XmlParsingExample { public static void main(String[] args) { String xml = ...'

Uus lehekülg

<source lang="java">

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class XmlParsingExample {

public static void main(String[] args) {
String xml = "<root><books><title>blah</title>"
+ "<book><title>Kevade</title><author>Luts</author></book>"
+ "<book><title>Sügis</title><author>Luts</author></book>"
+ "</books></root>";
System.out.println(xml);

// 1) manual
int pos = 0;
while (true) {
int titleStart = xml.indexOf("<book>", pos);
if (titleStart == -1) break; // no more book tags
titleStart = xml.indexOf("<title>", titleStart);
if (titleStart == -1) break; // no more titles
int titleEnd = xml.indexOf("</title>", titleStart);
String title = xml.substring(titleStart + "<title>".length(), titleEnd);
System.out.println(title);
pos = titleEnd;
}

// regex
/*
* sümbol - tähendab sama sümbolit
* x? - kas on või ei ole "x", 0 või 1 korda "x"
* x* - 0.. korda
* x+ - 1.. korda
* x{3} - täpselt kolm korda
* x{3,5} - kolm kuni viis korda
*
* . - suvaline sümbol
* [abc] - kas "a" või "b" või "c"
* [a-z] - kõik tähed 'a'...'z'
* [a-zA-Z] -
* [0-9] - kõik numbrid
*
* [^abc] - mitte "a" ega "b" ega "c", kõik ülejäänud sobivad
*
* [a-z]? - kas on väike täht või ei ole (0..1 korda väiketähte)
*
*/
match("this is colorrr", "colou?r");
match("this is colour", "colou?r");
match("this is colouuuu", "colou*r?");
match("this is colouuuu", "colou+r?");

match("this is greey", "gr.y");
match("this is gray", "gr[ae]y");

match("this is graey", "gr[ae]*y");
match("123456789", "[0-9]{1,8}");

match("this is colorrr", "[^ ]is");
match("binary number 00101010100010", "(01)+");

match("my number is +37212345678", "([0-9]{3})([0-9]*)");

match("this is colorrr", "(i(s))");
match("<title>Kevade</title>", "<title>(.*)</title>");
match(xml, "<title>(.*)</title>");
// lazy
//
match("AtereB AtulemastB", "A([^B]*)B");
}

public static void match(String s, String pattern) {
System.out.println(".-----");
System.out.println("s:" + s);
System.out.println("pattern:" + pattern);
Pattern p = Pattern.compile(pattern);
Matcher m = p.matcher(s);
while (m.find()) {
System.out.println("found at:" + m.start() + " ends at:" + m.end());
System.out.println(m.group(0));
for (int i = 1; i <= m.groupCount(); i++) {
System.out.println("group " + i + ": " + m.group(i));
}
}

}
}

</source>

ITI0011:praktikum 16 G12 - Redigeerimiste ajalugu

Ago: Uus lehekülg: ' import java.util.regex.Matcher; import java.util.regex.Pattern; public class XmlParsingExample { public static void main(String[] args) { String xml = ...'