Java IO.pdf - Nguyen Dang Binh

Java I/O
ASCII value is the ASCII value of the character you want plus 64 (or 96, if you count from
the capitals). Character 127, delete, is also a control character.
The common abbreviation for the character is given first, followed by its common meaning.
Some of these codes are pretty much obsolete. For instance, I'm not aware of any modern OS
that actually uses characters 28 through 31 as file, group, record, and unit separators. Those
control codes that are still used often have different meanings on different platforms. For
example, character 10, the linefeed, originally meant move the platen on the printer up one
line, while character 13, the carriage return, meant return the print-head to the beginning of
the line. On paper-based teletype terminals, this could be used to position the print-head
anywhere on a page and perhaps overtype characters that had already been typed. This no
longer makes sense in an era of glass terminals and GUIs, so linefeed has come to mean a
generic end-of-line character.
The next 128 Unicode characters—that is 128 through 255—have the same values as the
equivalent characters in the Latin-1 character set defined in ISO standard 8859-1. Latin-1, a
slight variation of which is used by Windows, adds the various accented characters, umlauts,
cedillas, upside-down question marks, and other characters needed to write text in most
Western European languages. Table B.2 shows these characters. The first 128 characters in
Latin-1 are the ASCII characters shown in Table B.1.
Table B.2. Unicode Characters Between 128 and 255, Also the Second Half of the ISO 8859-1
Latin-1 Character Set
Code Character Code Character Code Character Code Character
128 pad (padding character) 160 non-breaking space 192 À 224 à
129 hop (high octet preset) 161 ¡ 193 Á 225 á
130 bph (break permitted here) 162 ¢ 194 Â 226 â
131 nbh (no break here) 163 £ 195 Ã 227 ã
132 ind (index) 164 196 Ä 228 ä
133 nel (next line) 165 ¥ 197 Å 229 å
134 ssa (start of selected area) 166 | 198 Æ 230 æ
135 esa (end of selected area) 167 § 199 Ç 231 ç
136 hts (character tabulation set) 168 200 È 232 è
137
htj (character
justification)
tabulation with
169 © 201 É 233 é
138 vts (line tabulation set) 170 ª 202 Ê 234 ê
139 pld (partial line forward) 171 « 203 Ë 235 ë
140 plu (partial line backward) 172 ¬ 204 Ì 236 ì
141 ri (reverse line feed) 173
soft
hyphen
(optional)
205 Í 237 í
142 ss2 (single-shift two) 174 ® 206 Î 238 î
143 ss3 (single-shift three) 175 ¯ 207 Ï 239 ï
144 dcs (device control string) 176 (degree) 208 Ð 240 ð
145 pu1 (private use one) 177 ± 209 Ñ 241 ñ
146 pu2 (private use two) 178
2
210 Ò 242 ò
147 sts (set transmit state) 179
3
211 Ó 243 ó
148 cch (cancel character) 180 ´ 212 Ô 244 ô
149 mw (message waiting ) 181 213 Õ 245 õ
150 spa (start of guarded area) 182 214 Ö 246 ö
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