In addition to using Unicode character escapes, you could write the special characters directly in the Java source as long as your Java environment supports and uses the correct source encoding.

Using Java and the swing framework, provide example code for handling a text field with a single character input. Provide filters for the character inputs to restrict values to 1-9 and " ".

The String.split methods can be very convenient for easily splitting a provided String based on a provided regular expression String . The only trick is figuring out a regular expression token to ...