import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "# Parse table of SWPC event data\n"
+ "(?P<event>\\d{4})\n"
+ "\\s+\n"
+ "(?P<multi_event_flag>\\+)?\n"
+ "\\s+\n"
+ "(?P<time_start_flag>\\w)?\n"
+ "(?P<time_start>\\d{4})\n"
+ "\\s+\n"
+ "(?P<time_peak_flag>\\w)?\n"
+ "(?:\n"
+ " (?P<time_peak>\\d{4})|\n"
+ " /{4}\n"
+ ")\n"
+ "\\s+\n"
+ "(?P<time_end_flag>\\w)?\n"
+ "(?P<time_end>\\d{4})\n"
+ "\\s+\n"
+ "(?P<observatory>\\w{3})\n"
+ "\\s+\n"
+ "(?P<quality>\\w)\n"
+ "\\s+\n"
+ "(?P<type>\\w{3})\n"
+ "\\s+\n"
+ "(?:\n"
+ " (?P<location>\n"
+ " (?P<lat_hg>\\w\\d{2})\n"
+ " (?P<long_hg>\\w\\d{2})\n"
+ " )|\n"
+ " (?P<frequency_range>\n"
+ " (?P<from>\\w+)\n"
+ " \\-\n"
+ " (?P<to>\\w+)\n"
+ " )|\n"
+ " (?P<frequency>\n"
+ " (\\d{3})\n"
+ " )|\n"
+ " (?P<no_freq>\n"
+ " (/{4})\n"
+ " )\n"
+ ")\n"
+ "\\s+\n"
+ "(?P<particulars_1>[\\w/\\.\\+]+)\n"
+ "\\s+\n"
+ "(?:\n"
+ " (?P<particulars_2>\n"
+ " (?:\\d\\.\\d\\w[\\-\\+]\\d{2})?\n"
+ " )|\n"
+ " (?P<particulars_3>\\w{3}?)|\n"
+ " ()\n"
+ ")\n"
+ "\\s+\n"
+ "(?:\n"
+ " (?P<regnum>\\d{4})|\n"
+ " ()\n"
+ ")\n"
+ "\\n";
final String string = ":Product: 20050316events.txt\n"
+ ":Created: 2005 Mar 17 1802 UT\n"
+ ":Date: 2005 03 16\n"
+ "# Prepared by the U.S. Dept. of Commerce, NOAA, Space Environment Center.\n"
+ "# Please send comments and suggestions to SEC.Webmaster@noaa.gov \n"
+ "#\n"
+ "# Missing data: ////\n"
+ "# Updated every 30 minutes.\n"
+ "# Edited Events for 2005 Mar 16\n"
+ "#\n"
+ "#Event Begin Max End Obs Q Type Loc/Frq Particulars Reg#\n"
+ "#-------------------------------------------------------------------------------\n\n"
+ "1590 0318 0318 0318 LEA G RBR 245 51 \n\n"
+ "1620 + 0348 //// 1635 COM C RSP 30-80 CTM/1 \n\n"
+ "1600 + 0408 0410 0412 LEA G RBR 245 210 \n\n"
+ "1730 + 0422 1214 1511 COM G RNS 245 160 \n\n"
+ "1610 0522 0528 0532 G10 5 XRA 1-8A B4.2 1.9E-04 \n\n"
+ "1630 0741 0744 0748 G10 5 XRA 1-8A B1.9 7.3E-05 \n"
+ "1630 0741 //// 0743 SVI C RSP 025-089 III/1 \n\n"
+ "1640 1052 //// 1053 SVI U RSP 025-046 III/1 \n\n"
+ "1650 1125 1125 1125 SVI G RBR 245 85 \n"
+ "1650 1125 1125 1125 SVI G RBR 410 46 \n\n"
+ "1660 1150 //// 1150 SVI C RSP 025-041 III/1 \n\n"
+ "1670 + 1205 1208 1210 G12 5 XRA 1-8A B3.5 8.1E-05 0742\n"
+ "1670 1206 1206 1209 SAG G RBR 245 100 0742\n"
+ "1670 1207 1207 1207 SAG G RBR 410 56 0742\n"
+ "1670 1209 1210 1210 G12 5 XFL S02W48 3.0E+02 6.5E+02 0742\n"
+ "1670 1210 //// 2228 SAG C RSP 110-180 CTM/1 0742\n\n"
+ "1680 + 1217 1221 1223 G12 5 XRA 1-8A B5.1 1.4E-04 0742\n"
+ "1680 + 1219 1219 1219 SVI G RBR 410 310 0742\n"
+ "1680 1221 1222 1223 G12 5 XFL S03W50 7.5E+02 2.3E+03 0742\n\n"
+ "1690 + 1242 1245 1247 G12 5 XRA 1-8A B3.1 7.7E-05 0742\n"
+ "1690 1246 1246 1247 G12 5 XFL S07W48 4.3E+02 9.1E+02 0742\n\n"
+ "1700 + 1306 //// 1306 SAG C RSP 030-053 III/1 \n\n"
+ "1710 + 1318 1322 1332 G12 5 XRA 1-8A B3.0 2.3E-04 0742\n"
+ "1710 1322 1327 1331 G12 5 XFL S07W53 2.3E+02 4.6E+02 0742\n\n"
+ "1720 + 1339 //// 1339 SVI C RSP 025-034 III/1 \n\n"
+ "1750 1450 //// 1451 SVI C RSP 025-180 III/1 \n\n"
+ "1760 + 1542 1547 1554 G12 5 XRA 1-8A B3.8 2.1E-04 0742\n"
+ "1760 + 1544 1544 1546 SAG G RBR 245 380 0742\n"
+ "1760 + 1544 //// 1545 SAG C RSP 030-180 III/1 0742\n"
+ "1760 1546 1550 1553 G12 5 XFL S07W54 4.8E+02 1.0E+03 0742\n\n"
+ "1770 1633 //// 1634 SAG C RSP 030-050 III/1 \n\n"
+ "1780 1755 //// 1756 SAG C RSP 030-053 III/1 \n\n"
+ "1790 + 1851 //// 1851 PAL C RSP 025-085 III/1 \n\n"
+ "1800 + 1947 1953 1959 G12 5 XRA 1-8A B5.9 3.3E-04 0742\n"
+ "1800 1952 1957 1957 G12 5 XFL S06W57 7.3E+02 1.8E+03 0742\n\n"
+ "1810 + 2029 2034 2036 G12 5 XRA 1-8A B5.3 1.6E-04 0742\n"
+ "1810 + 2030 //// 2032 CUL C RSP 20-350 III/2 0742\n"
+ "1810 B2033 2033 2035 G12 5 XFL S07W54 7.8E+02 2.0E+03 0742\n"
+ "1810 + 2035 2035 2035 PAL G RBR 245 110 0742\n"
+ "1810 2035 U2035 2035 PAL G RBR 410 63 0742\n\n"
+ "1820 + 2049 2053 2056 G12 5 XRA 1-8A B3.6 1.3E-04 0742\n"
+ "1820 2051 //// 2051 CUL C RSP 40-160 III/1 0742\n"
+ "1820 2053 2053 A2053 G12 5 XFL S02W55 1.8E+02 3.3E+02 0742\n\n"
+ "1830 + 2116 2116 2116 PAL G RBR 245 630 \n"
+ "1830 + 2116 2116 2116 PAL G RBR 410 130 \n"
+ "1830 2116 2116 2116 PAL G RBR 606 67 \n"
+ "1830 2116 //// 2116 CUL C RSP 40-460 III/2 \n\n"
+ "1840 + 2304 2314 2316 G12 5 XRA 1-8A B9.8 4.6E-04 0742\n"
+ "1840 2309 2313 2316 G12 5 XFL S07W56 2.0E+03 5.3E+03 0742\n"
+ "1840 2313 2313 2318 HOL 3 FLA S06W52 SF ERU 0742\n"
+ "1840 2313 //// 2315 PAL C RSP 025-180 V/1 0742\n"
+ "1840 + 2314 2314 2314 PAL G RBR 245 160 0742\n"
+ "1840 + 2314 2314 2314 PAL G RBR 410 1700 0742\n"
+ "1840 + 2314 //// 2315 CUL C RSP 18-500 III/3 0742\n";
final Pattern pattern = Pattern.compile(regex, Pattern.COMMENTS);
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