import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "((`){1,3}|(\\*){1,3}|(~){2}|(\\|){2}|^(>){1,3}|(_){1,2})+";
final String string = "```hello```\n"
+ "`hello`\n"
+ "_hello_\n"
+ "***hello**\n"
+ "**hello**\n"
+ "*hello*\n"
+ "||hello||\n"
+ "> hello\n"
+ ">>> hello";
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