import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "(?<=attrs=\\[\\[[^\\]]*(?:](?!])[^\\]]*)*),(\\s*)";
final String string = "this.mk(attrs=[[keyCollection.key: 40]]))\n"
+ "this.mk(attrs=[[keyCollection.key: 50, override.key: override.value]])\n"
+ "this.mk(attrs=[[keyCollection.key: 60, \n"
+ " override.key: override.value]])";
final String subst = "],$1[";
final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE);
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