title: Save a hex String to File.hex in java
body: <p>I have a String which contains hex values. Now i want to write this exact string to a file with the ending .hex . How can i realize this in java?</p>
  
  <p>I already tried to convert the Hex Values into ASCII and then write this string into a file.
  But all Hex Values which are higher then 127(dec) can't be processed correctly.</p>
  
  <p>86(hex) is transformed to ?(char), which is 3F(hex) and not 86(hex).</p>