import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "(?=(?:^(?:\\+?1\\s*(?:[.-]\\s*)?)?(?!(?:(?:.*\\(.*)|(?:.*\\).*)))(?:[2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))|(?:.*\\((?:[2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\\).*))(?:\\+?1\\s*(?:[.-]\\s*)?)?(?:\\(?([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\\)?)\\s*(?:[.-]\\s*)?([2-9]1[02-9]|[2-9][02-9]1|[2-9][02-9]{2})\\s*(?:[.-]\\s*)?([0-9]{4})(?:\\s*(?:#|x\\.?|ext\\.?|extension)\\s*(\\d{1,15}))?$";
final String string = "// valid\n"
+ "(555)555-5555\n"
+ "1 (555) 555-5555\n"
+ "1 (555)-555-5555\n"
+ "555-555-5555\n"
+ "+1-555-532-3455\n"
+ "1-555-532-3455\n"
+ "1-555-532-3455 ext 4\n"
+ "1 (555) 555-5555 extension 123456789123456\n\n"
+ "// invalid\n"
+ "555-5555\n"
+ "1234567890\n"
+ "555--555-5555\n"
+ "555-555--5555\n"
+ "1234567\n"
+ "((555))555-5555\n"
+ "invalidphone\n"
+ "+91 (123) 456-7890\n"
+ "123.456.7890\n"
+ "1 (555) 555-5555 extension 0123456789012345";
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