Java provides escape sequences for several non-graphical characters.
All characters can be specified as:
- a hexidecimal Unicode character (\uxxxx)
- an octal character (\ddd where the first d is limited to 0-3, and the others 0-7 - same as \u0000-\u00ff).
\n New line \t Tab \b Backspace \r Carriage return \f Formfeed \\ Backslash \' Single quotation mark \" Double quotation mark \d Octal \xd Hexadecimal \ud Unicode character