public static void main(String[] args) {
        System.out.println("Backspace = <\b>");
        System.out.println("New line = <\n>");
        System.out.println("Return = <\r>");
        System.out.println("Formfeed = <\f>");
        System.out.println("Tab = <\t>");
        System.out.println("Backslash = <\\>");
        System.out.println("Single quote = <\'>");
        System.out.println("Double quote = <\">");
        System.out.println("Null = <\0>");
        
        System.out.println("\u0048\1451\u006c\157"); // Hello
        System.out.println('\u0e01'); // ก
        System.out.println('ก'); // ก
    }