import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "([(][\\{\\}a-zA-Z0-9,()]+,[\\{\\}a-zA-Z0-9,]+),";
final String string = "Should work for:\n"
+ "(1,2,3)\n"
+ "(1,2,3,4)\n"
+ "((1,2),3,4)\n"
+ "({x},{y},{z})\n"
+ "(1,(2,3),4)\n\n"
+ "Should not work for:\n"
+ "(1,2)\n"
+ "(10,10)\n"
+ "(1,10)\n"
+ "((1,2),3)\n"
+ "(((1,1),1),1)\n"
+ "({0},1)\n"
+ "({{x},{x,y}},z)";
final String subst = "(\\g<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