import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "if \\(([^\\$]+\\$\\<\\>[^ ]+)[^\\}]+\\(null, ([^;]+)\\);\\s+\\}\\s+([^;]+)\\1(.*;)";
final String string = "get\n"
+ "{\n"
+ "int num;\n"
+ "lock (this.queueLock)\n"
+ "{\n"
+ "if (Journal.CS$<>9__CachedAnonymousMethodDelegate7 == null)\n"
+ "{\n"
+ "Journal.CS$<>9__CachedAnonymousMethodDelegate7 = new Func<ApiBlob, int>(null, (ApiBlob blob) => Encoding.UTF8.GetByteCount(blob.DataString));\n"
+ "}\n"
+ "num = this.Sum<ApiBlob>(Journal.CS$<>9__CachedAnonymousMethodDelegate7);\n"
+ "}\n"
+ "return num;\n"
+ "}\n"
+ "}";
final String subst = "\\3\\2\\4";
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