Question

I try to parse the string /param1=value1/param2=value2, to extract the param/value pairs with this code :

  public static void main(String[] foo) {

    RegExp regExp = RegExp.compile("(/(\\w+)=(\\w+))*", "g");

    MatchResult matchResult = regExp.exec("/param1=value1/param2=value2");

    for (int i = 0; i < matchResult.getGroupCount(); i++) {
      System.out.println("group" + i + "=" + matchResult.getGroup(i));
    }

  }

which outputs :

group0=/param1=value1/param2=value2
group1=/param2=value2
group2=param2
group3=value2

I tried with and without the “g” (global) flag.

Why does it capture only param2=value2 and not also param1=value1?

Answer 1

Remove the asterisk(*) from your regex.