import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "\\[((\\w+)\\b([^]]*))\\]((?>(?!\\[\\2\\b).|(?R))*)\\[\\/\\2]";
final String string = "[quote quote=21555]Got some headphones, tried them, and i have sound with them.[/quote]\n\n"
+ "[quote quote=21574]Yes speaker not working still, last night reballed audio ic, still the same, i checked the resistors you told me all ok, But U3710 speaker amp shorted! speaker was getting hot!! :) removed U3710 and U3700, but cannot reball one, as one pad is gone. are these the same as iphone 4? i know they are different numbers, but would they work?[/quote]\n";
final String subst = "<blockquote$3>$4</blockquote>";
final Pattern pattern = Pattern.compile(regex, Pattern.DOTALL);
final Matcher matcher = pattern.matcher(string);
// The substituted value will be contained in the result variable
final String result = matcher.replaceAll(subst);
System.out.println("Substitution result: " + result);
}
}
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