Better way to detect if a string contains multiple words

Editors note: Despite being heavily upvoted and accepted, this does not function the same as the code in the question. execute is called on the first match, like a logical OR.

You could use an array:

String[] matches = new String[] {"adsf", "qwer"};

bool found = false;
for (String s : matches)
{
  if (input.contains(s))
  {
    execute();
    break;
  }
}

This is efficient as the one posted by you but more maintainable. Looking for a more efficient solution sounds like a micro optimization that should be ignored until proven to be effectively a bottleneck of your code, in any case with a huge string set the solution could be a trie.

I'd create a regular expression from the words:

Pattern pattern = Pattern.compile("(?=.*adsf)(?=.*qwer)");
if (pattern.matcher(input).find()) {
    execute();
}

For more details, see this answer: https://stackoverflow.com/a/470602/660143