Regular expression hangs - Java matcher

Question

String:

Aqua, Sodium Laureth Sulfate, Sodium Lauryl Sulfate, Dimethicone, Cocamide MEA, Zinc Carbonate, Glycol Distearate, Sodium Chloride, Zinc Pyrithion

Answer 1

I recommend you split your input string by word and then pattern match it, event simpler: not to pattern match if you just want to test that the first letter of each word is uppercase, like:

for (String s : string.split("\\W")) {
  if (s.charAt(0) < 'A' || s.charAt(0) > 'Z') {
    return false;
  }
}

Sounds a lot faster to me (and you can even have the word that failed if you need).