title: Pattern to check if a string contains specific characters
body: <p>Honestly, I don't know much about patterns, but I need one to let me know if one of more of these and only these characters exists in <code>myString</code>.</p>
  
  <pre><code>String myString = "thisMayContain/anything@";
  String charactersIdontWant = "^àáâãäåçèéêëìíîïðòóôõöùúûüýÿ!&amp;{}¿?.&lt;&gt;~\()";
  </code></pre>
  
  <p>Thank you.</p>