How to print the extended ASCII code in java from integer value
public static void main(String[] args)
{
int i=153;
int j=63;
System.out.println((char)i);
System.out.println((char)j);
}
OUTPUT:-
?
?
I have some i
-
String iChar = new Character((char)i).toString(); String jChar = new Character((char)j).toString(); System.out.println(iChar); System.out.println(jChar);讨论(0) -
ASCII
153(0x99) is different from UnicodeU+0099(Control character).Solution
This program should do what you intend it to do:
public class ExtendedAscii { public static final char[] EXTENDED = { 0x00C7, 0x00FC, 0x00E9, 0x00E2, 0x00E4, 0x00E0, 0x00E5, 0x00E7, 0x00EA, 0x00EB, 0x00E8, 0x00EF, 0x00EE, 0x00EC, 0x00C4, 0x00C5, 0x00C9, 0x00E6, 0x00C6, 0x00F4, 0x00F6, 0x00F2, 0x00FB, 0x00F9, 0x00FF, 0x00D6, 0x00DC, 0x00A2, 0x00A3, 0x00A5, 0x20A7, 0x0192, 0x00E1, 0x00ED, 0x00F3, 0x00FA, 0x00F1, 0x00D1, 0x00AA, 0x00BA, 0x00BF, 0x2310, 0x00AC, 0x00BD, 0x00BC, 0x00A1, 0x00AB, 0x00BB, 0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255D, 0x255C, 0x255B, 0x2510, 0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x255E, 0x255F, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x2567, 0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256B, 0x256A, 0x2518, 0x250C, 0x2588, 0x2584, 0x258C, 0x2590, 0x2580, 0x03B1, 0x00DF, 0x0393, 0x03C0, 0x03A3, 0x03C3, 0x00B5, 0x03C4, 0x03A6, 0x0398, 0x03A9, 0x03B4, 0x221E, 0x03C6, 0x03B5, 0x2229, 0x2261, 0x00B1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00F7, 0x2248, 0x00B0, 0x2219, 0x00B7, 0x221A, 0x207F, 0x00B2, 0x25A0, 0x00A0 }; public static final char getAscii(int code) { if (code >= 0x80 && code <= 0xFF) { return EXTENDED[code - 0x7F]; } return (char) code; } public static final void printChar(int code) { System.out.printf("%c%n", getAscii(code)); } public static void main(String[] args) { printChar(153); printChar(63); } }Output:
Ü
?As you can see from the output above, the intended character gets printed correctly.
Extension of Concept
Also, I wrote a program that prints out the Unicode values for the extended Ascii. As you can see in the output below, a lot of characters have trouble being displayed as native
char.Code:
public class ExtendedAscii { public static final char[] EXTENDED = { 0x00C7, 0x00FC, 0x00E9, 0x00E2, 0x00E4, 0x00E0, 0x00E5, 0x00E7, 0x00EA, 0x00EB, 0x00E8, 0x00EF, 0x00EE, 0x00EC, 0x00C4, 0x00C5, 0x00C9, 0x00E6, 0x00C6, 0x00F4, 0x00F6, 0x00F2, 0x00FB, 0x00F9, 0x00FF, 0x00D6, 0x00DC, 0x00A2, 0x00A3, 0x00A5, 0x20A7, 0x0192, 0x00E1, 0x00ED, 0x00F3, 0x00FA, 0x00F1, 0x00D1, 0x00AA, 0x00BA, 0x00BF, 0x2310, 0x00AC, 0x00BD, 0x00BC, 0x00A1, 0x00AB, 0x00BB, 0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255D, 0x255C, 0x255B, 0x2510, 0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x255E, 0x255F, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x2567, 0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256B, 0x256A, 0x2518, 0x250C, 0x2588, 0x2584, 0x258C, 0x2590, 0x2580, 0x03B1, 0x00DF, 0x0393, 0x03C0, 0x03A3, 0x03C3, 0x00B5, 0x03C4, 0x03A6, 0x0398, 0x03A9, 0x03B4, 0x221E, 0x03C6, 0x03B5, 0x2229, 0x2261, 0x00B1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00F7, 0x2248, 0x00B0, 0x2219, 0x00B7, 0x221A, 0x207F, 0x00B2, 0x25A0, 0x00A0 }; public static void main(String[] args) { for (char c : EXTENDED) { System.out.printf("%s, ", new String(Character.toChars(c))); } } }Output:
Ç, ü, é, â, ä, à, å, ç, ê, ë, è, ï, î, ì, Ä, Å, É, æ, Æ, ô, ö, ò, û, ù, ÿ, Ö, Ü, ¢, £, ¥, ?, ƒ, á, í, ó, ú, ñ, Ñ, ª, º, ¿, ?, ¬, ½, ¼, ¡, «, », ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ß, ?, ?, ?, ?, µ, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ±, ?, ?, ?, ?, ÷, ?, °, ?, ·, ?, ?, ², ?, ,
Reference Table: (source)
Dec Hex Unicode Char Description --- --- ------- ---- ----------------------------------- 128 80 U+00C7 Ç latin capital letter c with cedilla 129 81 U+00FC ü latin small letter u with diaeresis 130 82 U+00E9 é latin small letter e with acute 131 83 U+00E2 â latin small letter a with circumflex 132 84 U+00E4 ä latin small letter a with diaeresis 133 85 U+00E0 à latin small letter a with grave 134 86 U+00E5 å latin small letter a with ring above 135 87 U+00E7 ç latin small letter c with cedilla 136 88 U+00EA ê latin small letter e with circumflex 137 89 U+00EB ë latin small letter e with diaeresis 138 8A U+00E8 è latin small letter e with grave 139 8B U+00EF ï latin small letter i with diaeresis 140 8C U+00EE î latin small letter i with circumflex 141 8D U+00EC ì latin small letter i with grave 142 8E U+00C4 Ä latin capital letter a with diaeresis 143 8F U+00C5 Å latin capital letter a with ring above 144 90 U+00C9 É latin capital letter e with acute 145 91 U+00E6 æ latin small ligature ae 146 92 U+00C6 Æ latin capital ligature ae 147 93 U+00F4 ô latin small letter o with circumflex 148 94 U+00F6 ö latin small letter o with diaeresis 149 95 U+00F2 ò latin small letter o with grave 150 96 U+00FB û latin small letter u with circumflex 151 97 U+00F9 ù latin small letter u with grave 152 98 U+00FF ÿ latin small letter y with diaeresis 153 99 U+00D6 Ö latin capital letter o with diaeresis 154 9A U+00DC Ü latin capital letter u with diaeresis 155 9B U+00A2 ¢ cent sign 156 9C U+00A3 £ pound sign 157 9D U+00A5 ¥ yen sign 158 9E U+20A7 ₧ peseta sign 159 9F U+0192 ƒ latin small letter f with hook 160 A0 U+00E1 á latin small letter a with acute 161 A1 U+00ED í latin small letter i with acute 162 A2 U+00F3 ó latin small letter o with acute 163 A3 U+00FA ú latin small letter u with acute 164 A4 U+00F1 ñ latin small letter n with tilde 165 A5 U+00D1 Ñ latin capital letter n with tilde 166 A6 U+00AA ª feminine ordinal indicator 167 A7 U+00BA º masculine ordinal indicator 168 A8 U+00BF ¿ inverted question mark 169 A9 U+2310 ⌐ reversed not sign 170 AA U+00AC ¬ not sign 171 AB U+00BD ½ vulgar fraction one half 172 AC U+00BC ¼ vulgar fraction one quarter 173 AD U+00A1 ¡ inverted exclamation mark 174 AE U+00AB « left-pointing double angle quotation mark 175 AF U+00BB » right-pointing double angle quotation mark 176 B0 U+2591 ░ light shade 177 B1 U+2592 ▒ medium shade 178 B2 U+2593 ▓ dark shade 179 B3 U+2502 │ box drawings light vertical 180 B4 U+2524 ┤ box drawings light vertical and left 181 B5 U+2561 ╡ box drawings vertical single and left double 182 B6 U+2562 ╢ box drawings vertical double and left single 183 B7 U+2556 ╖ box drawings down double and left single 184 B8 U+2555 ╕ box drawings down single and left double 185 B9 U+2563 ╣ box drawings double vertical and left 186 BA U+2551 ║ box drawings double vertical 187 BB U+2557 ╗ box drawings double down and left 188 BC U+255D ╝ box drawings double up and left 189 BD U+255C ╜ box drawings up double and left single 190 BE U+255B ╛ box drawings up single and left double 191 BF U+2510 ┐ box drawings light down and left 192 C0 U+2514 └ box drawings light up and right 193 C1 U+2534 ┴ box drawings light up and horizontal 194 C2 U+252C ┬ box drawings light down and horizontal 195 C3 U+251C ├ box drawings light vertical and right 196 C4 U+2500 ─ box drawings light horizontal 197 C5 U+253C ┼ box drawings light vertical and horizontal 198 C6 U+255E ╞ box drawings vertical single and right double 199 C7 U+255F ╟ box drawings vertical double and right single 200 C8 U+255A ╚ box drawings double up and right 201 C9 U+2554 ╔ box drawings double down and right 202 CA U+2569 ╩ box drawings double up and horizontal 203 CB U+2566 ╦ box drawings double down and horizontal 204 CC U+2560 ╠ box drawings double vertical and right 205 CD U+2550 ═ box drawings double horizontal 206 CE U+256C ╬ box drawings double vertical and horizontal 207 CF U+2567 ╧ box drawings up single and horizontal double 208 D0 U+2568 ╨ box drawings up double and horizontal single 209 D1 U+2564 ╤ box drawings down single and horizontal double 210 D2 U+2565 ╥ box drawings down double and horizontal single 211 D3 U+2559 ╙ box drawings up double and right single 212 D4 U+2558 ╘ box drawings up single and right double 213 D5 U+2552 ╒ box drawings down single and right double 214 D6 U+2553 ╓ box drawings down double and right single 215 D7 U+256B ╫ box drawings vertical double and horizontal single 216 D8 U+256A ╪ box drawings vertical single and horizontal double 217 D9 U+2518 ┘ box drawings light up and left 218 DA U+250C ┌ box drawings light down and right 219 DB U+2588 █ full block 220 DC U+2584 ▄ lower half block 221 DD U+258C ▌ left half block 222 DE U+2590 ▐ right half block 223 DF U+2580 ▀ upper half block 224 E0 U+03B1 α greek small letter alpha 225 E1 U+00DF ß latin small letter sharp s 226 E2 U+0393 Γ greek capital letter gamma 227 E3 U+03C0 π greek small letter pi 228 E4 U+03A3 Σ greek capital letter sigma 229 E5 U+03C3 σ greek small letter sigma 230 E6 U+00B5 µ micro sign 231 E7 U+03C4 τ greek small letter tau 232 E8 U+03A6 Φ greek capital letter phi 233 E9 U+0398 Θ greek capital letter theta 234 EA U+03A9 Ω greek capital letter omega 235 EB U+03B4 δ greek small letter delta 236 EC U+221E ∞ infinity 237 ED U+03C6 φ greek small letter phi 238 EE U+03B5 ε greek small letter epsilon 239 EF U+2229 ∩ intersection 240 F0 U+2261 ≡ identical to 241 F1 U+00B1 ± plus-minus sign 242 F2 U+2265 ≥ greater-than or equal to 243 F3 U+2264 ≤ less-than or equal to 244 F4 U+2320 ⌠ top half integral 245 F5 U+2321 ⌡ bottom half integral 246 F6 U+00F7 ÷ division sign 247 F7 U+2248 ≈ almost equal to 248 F8 U+00B0 ° degree sign 249 F9 U+2219 ∙ bullet operator 250 FA U+00B7 · middle dot 251 FB U+221A √ square root 252 FC U+207F ⁿ superscript latin small letter n 253 FD U+00B2 ² superscript two 254 FE U+25A0 ■ black square 255 FF U+00A0 no-break space讨论(0) -
If this is a terminal encoding issue, I believe that this answer https://stackoverflow.com/a/362006/4828060
is a fast and straightforward way to bypass the problem. Just add -Dfile.encoding=some_encoding to the parameters of the java command,
e.g. java -Dfile.encoding=UTF-8 … MainClass
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"Extended ASCII" is nebulous. There are many extensions to ASCII that define glyphs for the byte values between 127 and 255. These are referred to as code pages. Some of the more common ones include:
- CP437, the standard on original IBM PCs
- ISO 8859-1 also known as Code page 1252, the encoding used for most Western European-language versions of Windows for everything but the console
You really need to know what character encoding your terminal is expecting, otherwise you'll end up printing garbage. In Java, you should be able to check the value of
Charset.defaultCharset()(Charset documentation).There are many more ways to encode characters than just single-byte "extended ASCII" code pages. Unicode requires far more code points than 255, so there are various fixed-width and variable-width encodings that are used frequently. This page seems to be a good guide to character encoding in Java.
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