import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "[sS]ee, e\\.g\\.[^(]*\\((\\d*)\\D+Cir[^(]*\\((\\d+)\\D+Cir";
final String string = " Here are three examples I WANT to match:\n"
+ "See, e.g., Smith v. U.S. (5th Cir. 2012); U.S. v. Sara (1st Cir. 2017).\n"
+ "See, e.g., Jefferson v. U.S. (D.C. Cir. 2012); U.S. v. Coolidge (10th Cir. 2017).\n"
+ "See, e.g., Lincoln v. Jones (9th Cir. 2012); U.S. v. Roosevelt (3d Cir. 2017).\n\n"
+ "Here are three examples I DO NOT WANT to match.\n"
+ "See, e.g., Smith v. U.S. (1st Cir. 2012); U.S. v. Sara (5th Cir. 2017).\n"
+ "See, e.g., Jefferson v. U.S. (10th Cir. 2012); U.S. v. Coolidge (D.C. Cir. 2017).\n"
+ "See, e.g., Lincoln v. Jones (3d Cir. 2012); U.S. v. Roosevelt (9th Cir. 2017).\n";
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