title: Remove Non-Ansi Chars from a UTF String and Keep Others
body: <p>We have a java lib accpeting a UTF8 string as the input. But if there is any char which is a non-ansi char in the input, the lib may crash. So, we want to remove all non-ansi char from the string. But how to do that in java?</p>
  
  <p>Thanks,</p>