import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "^\\s*[a-zA-Z]{1}[0-9a-zA-Z][0-9a-zA-Z '-.=#/]*$";
final String string = "test=123\n"
+ "=test123\n"
+ "austin .,#/-\n"
+ "Aberdeen\n"
+ "Abilene\n"
+ "Akron\n"
+ "Albany\n"
+ "Albu querque\n"
+ "Alexandria\n"
+ "Allentown\n"
+ "Amarillo\n"
+ "Anaheim\n"
+ "Anchorage\n"
+ "Ann Arbor\n"
+ "Antioch\n"
+ "Apple Valley\n"
+ "Appleton\n"
+ "Arlington\n"
+ "Arvada\n"
+ "Asheville\n"
+ "Athens\n"
+ "Atlanta\n"
+ "Atlantic City\n"
+ "Augusta\n"
+ "Aurora\n"
+ "Austin\n"
+ "Bakersfield\n"
+ "Baltimore\n"
+ "Barnstable\n"
+ "Baton Rouge\n"
+ "Beaumont\n"
+ "Bel Air\n"
+ "Bellevue\n"
+ "Berkeley\n"
+ "Bethlehem\n"
+ "Billings\n"
+ "Birmingham\n"
+ "Bloomington\n"
+ "Boise\n"
+ "Boise City\n"
+ "Bonita Springs\n"
+ "Boston\n"
+ "Boulder\n"
+ "Bradenton\n"
+ "Bremerton\n"
+ "Bridgeport\n"
+ "Brighton\n"
+ "Brownsville\n"
+ "Bryan\n"
+ "Buffalo\n"
+ "Burbank\n"
+ "Burlington\n"
+ "Cambridge\n"
+ "Canton\n"
+ "Cape Coral\n"
+ "Carrollton\n"
+ "Cary\n"
+ "Cathedral City\n"
+ "Cedar Rapids\n"
+ "Champaign\n"
+ "Chandler\n"
+ "Charleston\n"
+ "Charlotte\n"
+ "Chattanooga\n"
+ "Chesapeake\n"
+ "Chicago\n"
+ "Chula Vista\n"
+ "Cincinnati\n"
+ "Clarke County\n"
+ "Clarksville\n"
+ "Clearwater\n"
+ "Cleveland\n"
+ "College Station\n"
+ "Colorado Springs\n"
+ "Columbia\n"
+ "Columbus\n"
+ "Concord\n"
+ "Coral Springs\n"
+ "Corona\n"
+ "Corpus Christi\n"
+ "Costa Mesa\n"
+ "Dallas\n"
+ "Daly City\n"
+ "Danbury\n"
+ "Davenport\n"
+ "Davidson County\n"
+ "Dayton\n"
+ "Daytona Beach\n"
+ "Deltona\n"
+ "Denton\n"
+ "Denver\n"
+ "Des Moines\n"
+ "Detroit\n"
+ "Downey\n"
+ "Duluth\n"
+ "Durham\n"
+ "El Monte\n"
+ "El Paso\n"
+ "Elizabeth\n"
+ "Elk Grove\n"
+ "Elkhart\n"
+ "Erie\n"
+ "Escondido\n"
+ "Eugene\n"
+ "Evansville\n"
+ "Fairfield\n"
+ "Fargo\n"
+ "Fayetteville\n"
+ "Fitchburg\n"
+ "Flint\n"
+ "Fontana\n"
+ "Fort Collins\n"
+ "Fort Lauderdale\n"
+ "Fort Smith\n"
+ "Fort Walton Beach\n"
+ "Fort Wayne\n"
+ "Fort Worth\n"
+ "Frederick\n"
+ "Fremont\n"
+ "Fresno\n"
+ "Fullerton\n"
+ "Gainesville\n"
+ "9Garden Grove\n"
+ "Garland\n"
+ "Gastonia\n"
+ "Gilbert\n"
+ "Glendale\n"
+ "Grand Prairie\n"
+ "Grand Rapids\n"
+ "Grayslake\n"
+ "Green Bay\n"
+ "GreenBay\n"
+ "Greensboro\n"
+ "Greenville\n"
+ "Gulfport-Biloxi\n"
+ "Hagerstown\n"
+ "Hampton\n"
+ "Harlingen\n"
+ "Harrisburg\n"
+ "Hartford\n"
+ "Havre de Grace\n"
+ "Hayward\n"
+ "Hemet\n"
+ "Henderson\n"
+ "Hesperia\n"
+ "Hialeah\n"
+ "Hickory\n"
+ "High Point\n"
+ "Hollywood\n"
+ "Honolulu\n"
+ "Houma\n"
+ "Houston\n"
+ "Howell\n"
+ "Huntington\n"
+ "Huntington Beach\n"
+ "Huntsville\n"
+ "Independence\n"
+ "Indianapolis\n"
+ "Inglewood\n"
+ "Irvine\n"
+ "Irving\n"
+ "Jackson\n"
+ "Jacksonville\n"
+ "Jefferson\n"
+ "Jersey City\n"
+ "Johnson City\n"
+ "Joliet\n"
+ "Kailua\n"
+ "Kalamazoo\n"
+ "Kaneohe\n"
+ "Kansas City\n"
+ "Kennewick\n"
+ "Kenosha\n"
+ "Killeen\n"
+ "Kissimmee\n"
+ "Knoxville\n"
+ "Lacey\n"
+ "Lafayette\n"
+ "Lake Charles\n"
+ "Lakeland\n"
+ "Lakewood\n"
+ "Lancaster\n"
+ "Lansing\n"
+ "Laredo\n"
+ "Las Cruces\n"
+ "Las Vegas\n"
+ "Layton\n"
+ "Leominster\n"
+ "Lewisville\n"
+ "Lexington\n"
+ "Lincoln\n"
+ "Little Rock\n"
+ "Long Beach\n"
+ "Lorain\n"
+ "Los Angeles\n"
+ "Louisville\n"
+ "Lowell\n"
+ "Lubbock\n"
+ "Macon\n"
+ "Madison\n"
+ "Manchester\n"
+ "Marina\n"
+ "Marysville\n"
+ "McAllen\n"
+ "McHenry\n"
+ "Medford\n"
+ "Melbourne\n"
+ "Memphis\n"
+ "Merced\n"
+ "Mesa\n"
+ "Mesquite\n"
+ "Miami\n"
+ "Milwaukee\n"
+ "Minneapolis\n"
+ "Miramar\n"
+ "Mission Viejo\n"
+ "Mobile\n"
+ "Modesto\n"
+ "Monroe\n"
+ "Monterey\n"
+ "Montgomery\n"
+ "Moreno Valley\n"
+ "Murfreesboro\n"
+ "Murrieta\n"
+ "Muskegon\n"
+ "Myrtle Beach\n"
+ "Naperville\n"
+ "Naples\n"
+ "Nashua\n"
+ "Nashville\n"
+ "New Bedford\n"
+ "New Haven\n"
+ "New London\n"
+ "New Orleans\n"
+ "New York\n"
+ "New York City\n"
+ "Newark\n"
+ "Newburgh\n"
+ "Newport News\n"
+ "Norfolk\n"
+ "Normal\n"
+ "Norman\n"
+ "North Charleston\n"
+ "North Las Vegas\n"
+ "North Port\n"
+ "Norwalk\n"
+ "Norwich\n"
+ "Oakland\n"
+ "Ocala\n"
+ "Oceanside\n"
+ "Odessa\n"
+ "Ogden\n"
+ "Oklahoma City\n"
+ "Olathe\n"
+ "Olympia\n"
+ "Omaha\n"
+ "Ontario\n"
+ "Orange\n"
+ "Orem\n"
+ "Orlando\n"
+ "Overland Park\n"
+ "Oxnard\n"
+ "Palm Bay\n"
+ "Palm Springs\n"
+ "Palmdale\n"
+ "Panama City\n"
+ "Pasadena\n"
+ "Paterson\n"
+ "Pembroke Pines\n"
+ "Pensacola\n"
+ "Peoria\n"
+ "Philadelphia\n"
+ "Phoenix\n"
+ "Pittsburgh\n"
+ "Plano\n"
+ "Pomona\n"
+ "Pompano Beach\n"
+ "Port Arthur\n"
+ "Port Orange\n"
+ "Port Saint Lucie\n"
+ "Port St. Lucie\n"
+ "Portland\n"
+ "Portsmouth\n"
+ "Poughkeepsie\n"
+ "Providence\n"
+ "Provo\n"
+ "Pueblo\n"
+ "Punta Gorda\n"
+ "Racine\n"
+ "Raleigh\n"
+ "Rancho Cucamonga\n"
+ "Reading\n"
+ "Redding\n"
+ "Reno\n"
+ "Richland\n"
+ "Richmond\n"
+ "Richmond County\n"
+ "Riverside\n"
+ "Roanoke\n"
+ "Rochester\n"
+ "Rockford\n"
+ "Roseville\n"
+ "Round Lake Beach\n"
+ "Sacramento\n"
+ "Saginaw\n"
+ "Saint Louis\n"
+ "Saint Paul\n"
+ "Saint Petersburg\n"
+ "Salem\n"
+ "Salinas\n"
+ "Salt Lake City\n"
+ "San Antonio\n"
+ "San Bernardino\n"
+ "San Buenaventura\n"
+ "San Diego\n"
+ "San Francisco\n"
+ "San Jose\n"
+ "Santa Ana\n"
+ "Santa Barbara\n"
+ "Santa Clara\n"
+ "Santa Clarita\n"
+ "Santa Cruz\n"
+ "Santa Maria\n"
+ "Santa Rosa\n"
+ "Sarasota\n"
+ "Savannah\n"
+ "Scottsdale\n"
+ "Scranton\n"
+ "Seaside\n"
+ "Seattle\n"
+ "Sebastian\n"
+ "Shreveport\n"
+ "Simi Valley\n"
+ "Sioux City\n"
+ "Sioux Falls\n"
+ "South Bend\n"
+ "South Lyon\n"
+ "Spartanburg\n"
+ "Spokane\n"
+ "Springdale\n"
+ "Springfield\n"
+ "St. Louis\n"
+ "St. Paul\n"
+ "St. Petersburg\n"
+ "Stamford\n"
+ "Sterling Heights\n"
+ "Stockton\n"
+ "Sunnyvale\n"
+ "Syracuse\n"
+ "Tacoma\n"
+ "Tallahassee\n"
+ "Tampa\n"
+ "Temecula\n"
+ "Tempe\n"
+ "Thornton\n"
+ "Thousand Oaks\n"
+ "Toledo\n"
+ "Topeka\n"
+ "Torrance\n"
+ "Trenton\n"
+ "Tucson\n"
+ "Tulsa\n"
+ "Tuscaloosa\n"
+ "Tyler\n"
+ "Utica\n"
+ "Vallejo\n"
+ "Vancouver\n"
+ "Vero Beach\n"
+ "Victorville\n"
+ "Virginia Beach\n"
+ "Visalia\n"
+ "Waco\n"
+ "Warren\n"
+ "Washington\n"
+ "Waterbury\n"
+ "Waterloo\n"
+ "West Covina\n"
+ "West Valley City\n"
+ "Westminster\n"
+ "Wichita\n"
+ "Wilmington\n"
+ "Winston\n"
+ "Winter Haven\n"
+ "Worcester\n"
+ "Yakima\n"
+ "Yonkers\n"
+ "York\n"
+ "Youngstown";
final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE | Pattern.CASE_INSENSITIVE);
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