How do I convert a String to an InputStream in Java?

Source:

public class Example {
   public static void main(String[] args) {

      String mystring = "This is an example";

      // Must be caught or declared to be thrown 
      try {
         InputStream stream = new ByteArrayInputStream(mystring.getBytes("UTF-8"));
      } catch (Exception e) {
      }
   }
}