* The key of a character, is an integer composed of primary order(short),
* secondary order(char), and tertiary order(char). Java strictly defines the
* size and signedness of its primitive data types. Therefore, the static
* The key of a character, is an integer composed of primary order(short),
* secondary order(char), and tertiary order(char). Java strictly defines the
* size and signedness of its primitive data types. Therefore, the static