import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "(?s)<body>\\K\\s*<tag(?:(?!<inner_block=25>).)+</tag>";
final String string = "<body>\n"
+ "<tag>\n"
+ "<number=1>\n"
+ "<inner_block=5>\n"
+ "</tag>\n"
+ "<tag>\n"
+ "<number=12>\n"
+ "<inner_block=15>\n"
+ "</tag>\n"
+ "<tag>\n"
+ "<number=21>\n"
+ "<inner_block=25>\n"
+ "</tag>\n"
+ "<tag>\n"
+ "<number=29>\n"
+ "<inner_block=35>\n"
+ "</tag>\n"
+ "</body>";
final String subst = "";
final Pattern pattern = Pattern.compile(regex);
final Matcher matcher = pattern.matcher(string);
// The substituted value will be contained in the result variable
final String result = matcher.replaceFirst(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