import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "(?<Month>\\d{1,2})\\/(?<Day>\\d{1,2})\\/(?<Year>(?:\\d{4}|\\d{2}))";
final String string = "--- Getting started with Expresso ---\n\n"
+ "Try clicking the \"Run Match\" button (or F5) to see what\n"
+ "happens. After a successful match click in the results box\n"
+ "to highlight the matched text. Click the \"Replace\" button\n"
+ "using the \"Dates\" example. Notice in the results box that the\n"
+ "format of all the dates has been altered. Using the\n"
+ "\"Expression Library\" tab double-click another regular\n"
+ "expression and \"Run Match\".\n\n"
+ "Click \"Show the Builder\" (or Ctrl+D) to start designing your\n"
+ "own regular expressions; or enter them directly in the\n"
+ "regular expression box. Enter the text you want to search in\n"
+ "the sample text box.\n\n"
+ "Expand nodes in the \"Regex Analyzer\" to see a description\n"
+ "of the current regular expression. Right-click a node to edit\n"
+ "the expression.\n\n"
+ "--- Sample text ---\n"
+ "Comma Separated Values\n"
+ "a,b,c,d,e\n"
+ "Dog,Cat,Puppy\n\n"
+ "US phone numbers, (800) 325-3535, (650) 555 1212\n"
+ "US zip codes, 95076-1234, 90210-6473\n"
+ "Dates:12/25/02 9/11/2001 11/22/63 12/7/41\n\n"
+ "URLs:\n"
+ "http://www.usgs.gov\n"
+ "http://www.acl.lanl.gov/URI/archive/uri-archive.index.html\n"
+ "ftp://@host.com/\n"
+ "ftp://host.com/\n"
+ "ftp://foo:@host.com/\n"
+ "ftp://myname@host.dom/%2Fetc/motd\n"
+ "file://vms.host.edu/disk$user/my/notes/note12345.txt\n"
+ "prospero://host.dom//pros/name\n\n"
+ "IP addresses:\n"
+ "123.54.63.0\n"
+ "255.257.0.1 -> This one has an illegal number\n"
+ "0.255.255.12\n\n"
+ "UK Postal Codes:\n"
+ "M1 1AA \n"
+ "M60 1NW \n"
+ "ABD3 7BB -> This is an illegal format\n"
+ "M1 1CA -> This has illegal letters (CIKMOV) in the second half\n"
+ "W1A 1HQ \n\n"
+ "Canadian Postal Codes:\n"
+ "A1A 1A1\n"
+ "B6C 8X7\n"
+ "5 Shoreham Drive, Downsview, Ontario, M3N 1S4\n\n"
+ "Netherlands Postal Codes:\n"
+ "1234 ZA\n"
+ "5678 KL\n"
+ "0123 AZ -> Illegal number, must be 1000-9999\n"
+ "5432 ABQ -> Too many characters\n\n"
+ " \n"
+ "Here is some text as bait for the multiple captures example:\n"
+ "XYZAbcAbcAbcXYZAbcAb\n"
+ "acacacac\n\n"
+ " Paris\n"
+ " in the\n"
+ "the spring\n\n"
+ "{a[b(c)d]e}\n\n"
+ "Email:\n"
+ "esupport@ultrapico.com\n"
+ "maynard@krebs.com\n\n"
+ "Hyperlinks\n"
+ "<a href=\"http://www.codeproject.com\">The Code Project</a>\n"
+ "Href=\"http://ultrapico.com/Expresso.htm\"\n\n"
+ "Key-Value Pairs\n"
+ "FurryAnimal=Dog\n"
+ "NonFurryAnimal=Turtle\n\n"
+ "HTML Tags\n"
+ "<p>Hello World</p>\n"
+ "<H1>Regular Expressions</H1>\n\n"
+ "Social Security Numbers\n"
+ "123-45-6789\n"
+ "987-65-4321\n\n"
+ "Mastercard\n"
+ "5134567890123456\n"
+ "Visa\n"
+ "4234567890123\n"
+ "Amex\n"
+ "343456789012345\n"
+ "Diners Club\n"
+ "30045678901234\n"
+ "Discover\n"
+ "6011567890123456\n\n"
+ "Numbers\n"
+ "123.56\n"
+ "-234.5\n"
+ "12\n"
+ "+13\n"
+ "0.56\n"
+ "-.2\n"
+ ".3\n"
+ "25.\n"
+ "1.38E-23\n"
+ "0.2E45\n"
+ "6E+19\n"
+ "0AFD\n"
+ "1CA0234F";
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