Java IO.pdf - Nguyen Dang Binh

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151 epa (end of guarded area) 183 · 215 × 247 ÷ 152 sos (start of string) 184 (cedilla) 216 Ø 248 ø 153 sgi (single introducer) graphic character 185 1 217 Ù 249 ù 154 sci (single character introducer) 186 º 218 Ú 250 ú 155 csi (control sequence introducer) 187 » 219 Û 251 û 156 st (string terminator) 188 1 /4 220 Ü 252 ü 157 osc (operating system command) 189 1/ 2 221 Ý 253 ý 158 pm (privacy message) 190 3/ 4 222 254 þ 159 apc (application program command) 191 ¿ 223 ß 255 ÿ Java I/O Characters 128 through 159 are nonprinting control characters, much like characters through 31 of the ASCII set. Unicode does not specify any meanings for these 32 characters, but their common interpretations are listed in the table. On Windows most of these positions are used for noncontrol characters not normally included in Latin-1. These alternate interpretations are given in Table B.3. Table B.3. Windows Characters Between 128 and 159 Code Character Code Character Code Character Code Character 128 undefined 136 ^ 144 undefined 152 ~ 129 undefined 137 130 , 138 145 ` 153 146 ' 154 131 ƒ 139 ‹ 147 " 155 › 132 „ 140 148 " 156 œ 133 ... 141 undefined 149 157 undefined 134 135 142 [A] 150 - 158 [A] 143 undefined 151 — 159 Ÿ Values beyond 255 encode characters from various other character sets. Where possible, character blocks describing a particular group of characters map onto established encodings for that set of characters by simple transposition. For instance, Unicode characters 884 through 1011 encode the Greek alphabet and associated characters like the Greek question mark (;). This is a direct transposition by 720 of characters 128 through 255 of the ISO 8859- 7 character set, which is in turn based on the Greek national standard ELOT 928. For example, the small letter delta, d, Unicode character 948, is ISO 8859-7 character 228. A small epsilon, e, Unicode character 949, is ISO 8859-7 character 229. In general, the Unicode value for a Greek character equals the ISO 8859-7 value for the character plus 720. Other character sets are included in Unicode in a similar fashion whenever possible. As much as I'd like to include complete tables for all Unicode characters, if I did so, this book would be little more than that table. For complete lists of all the Unicode characters and associated glyphs, the canonical reference is The Unicode Standard Version 2.0, by the Unicode Consortium, ISBN 0-201-48345-9. Updates to that book can be found at http://www.unicode.org/. Online charts can be found at http://unicode.org/charts. A These values are true for some, but not all, Windows systems. They are otherwise undefined. 467
Java I/O Table B.4 lists the encodings that Java, javac, and native2ascii understand. Detailed information about how these character sets map to Unicode can be found in the various files at ftp://ftp.unicode.org/Public/MAPPINGS/. Table B.4. Available Encodings in Java 1.1 Name Encoding ISO Latin-1, ASCII plus the characters needed for most Western European languages, 8859_1 including Danish, Dutch, English, Faroese, Finnish, Flemish, German, Icelandic, Irish, Italian, Norwegian, Portuguese, Spanish, and Swedish. Some non-European languages are also sometimes written with these characters, including Hawaiian, Indonesian, and Swahili. 8859_2 ISO Latin-2, ASCII plus the characters needed for most Central European languages, including Croatian, Czech, Hungarian, Polish, Romanian, Slovak, and Slovenian. 8859_3 ISO Latin-3, ASCII plus the characters needed for Esperanto, Maltese, Turkish, and Galician, though Latin-5, ISO 8859-9, is now preferred for Turkish. 8859_4 ISO Latin-4, ASCII plus the characters needed for the Baltic languages Latvian, Lithuanian, Greenlandic, and Lappish 8859_5 ASCII plus variant forms of Cyrillic characters used for Byelorussian, Bulgarian, Macedonian, Russian, Serbian, and Ukrainian. 8859_6 ASCII plus Arabic. 8859_7 ASCII plus modern Greek. 8859_8 ASCII plus Hebrew. 8859_9 ISO Latin-5. This is essentially the same as Latin-1 (ASCII plus Western Europe) except that the Icelandic letters Ý, ý, Ð, ð, and þ are replaced with the Turkish letters , , , , , and . Big5 Big5, traditional Chinese. CNS11643 CNS 11643, the Han character standard interchange code for general use, traditional Chinese. EBCDIC, a non-ASCII-based character set, primarily used on IBM mainframes. This version Cp037 includes characters for U.S., Australian, and Canadian English, Canadian French, Dutch, and Portuguese. Cp273 EBCDIC for German. Cp277 EBCDIC for Danish and Norwegian. Cp278 EBCDIC for Finnish and Swedish. Cp280 EBCDIC for Italian. Cp284 EBCDIC for Spanish and Catalan. Cp285 EBCDIC for British English (also used in Ireland). Cp297 EBCDIC for French. Cp420 EBCDIC for Arabic. Cp424 EBCDIC for Hebrew. DOS English character set for the United States, Australia, New Zealand, South Africa, Cp437 ASCII plus various accented characters. Furthermore, like most DOS-based character sets, this includes a number of line and corner characters commonly used to display spreadsheets and tables. These are called box-drawing characters. Cp500 EBCDIC International, essentially a reordered set of the same characters in Latin-1. Cp737 DOS ASCII plus Greek and various box-drawing characters in the upper 128 places. Cp775 DOS ASCII plus Baltic and various box-drawing characters in the upper 128 places. Cp838 EBCDIC for Thai. Cp850 DOS ASCII plus Western European and various box-drawing characters in the upper 128 places. Cp852 DOS ASCII plus Central European and various box-drawing characters in the upper 128 places. Cp855 DOS ASCII plus Cyrillic and various box-drawing characters in the upper 128 places. 468
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Java I/O Elliotte Rusty Harold Publ
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III: Filter Streams ...............
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V: Appendixes .....................
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Preface Java I/O In many ways this
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Java I/O operations from moving byt
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Chapter 9 Chapter 10 Java I/O Chapt
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Chapter 17 Java I/O lining up the d
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Security Issues Java I/O I don't kn
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Java I/O Finally, although many of
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Part I: Basic I/O Java I/O 13
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Java I/O The word stream is derived
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Java I/O The java.util.jar package
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Java I/O For instance, according to
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Java I/O Java understands several d
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Java I/O commonly use an eight-bit
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Java I/O For the most part, these c
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Figure 1.1. An xterm console on Uni
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Java I/O If you absolutely must use
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Java I/O in Apple's Macintosh Runti
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Java I/O to work inside a web brows
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Java I/O bit pattern to a particula
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Java I/O The output is the same as
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OutputStream out = new NullOutputSt
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Figure 2.1. The StreamedTextArea co
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Java I/O When you call read(), you
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Java I/O try { byte[] b = new byte[
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Java I/O Once you have closed an in
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public class StreamCopier { } publi
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Chapter 4. File Streams Java I/O Un
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} } for (int i = 0; i < args.length
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Java I/O The FileOutputStream class
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Java I/O ASCII format is the defaul
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} } } Java I/O if (hex >= 16) Syste
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Java I/O Finally, many HTML files c
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Java I/O In particular, URL connect
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Java I/O Example 5.3 uses these ste
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Java I/O many available ports but o
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Java I/O inspecting the port. It kn
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} } } String response = "Hello " +
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} public void actionPerformed(Actio
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Chapter 6. Filter Streams Java I/O
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Java I/O output stream, out. Among
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Java I/O SourceFile???StringExtract
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6.3 Buffered Streams Java I/O Buffe
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public boolean markSupported() Java
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The compiler rewrites this complica
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public class TeeCopier { } public s
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} } try { FileInputStream fin = new
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} public int available() throws IOE
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public class HexFilter extends Dump
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} } StreamCopier.copy(in, out); in.
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Java I/O the java.io.DataOutput int
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Java I/O Although other schemes are
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} public static void main(String ar
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Java I/O Since Java has no unsigned
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dout.close(); } catch (IOException
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Java I/O The DataInputStream class
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Java I/O The readLine() method read
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7.7 Miscellaneous Methods Java I/O
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public synchronized void write(int
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** * Writes a 4 byte Java float to
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} * possible that this number is te
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*/ public byte readByte(int b) thro
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} Java I/O long byte4 = in.read();
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7.9 Thread Safety Java I/O The Litt
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public static void main(String[] ar
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Table 7.2. Command-Line Switches fo
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} protected void fill() throws IOEx
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Chapter 8. Streams in Memory Java I
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UDP Byte array input and output str
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} } try { // So that the buffer doe
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Java I/O Otherwise, these classes j
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} } catch (IOException e) { // prob
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Java I/O legally unencumbered—tha
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Java I/O if it doesn't, it will com
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Java I/O The first method fills the
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public class DirectDeflater { } pub
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9.1.2.1 Constructing inflaters Ther
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9.1.2.7 An example Java I/O Example
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Java I/O stream itself, without hav
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Java I/O Each inflater input stream
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Java I/O This writes all remaining
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} } } FileOutputStream fout = new F
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} } } catch (IOException e) {System
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Java I/O Normally, the name argumen
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% java FancyZipLister temp.zip test
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Java I/O All high-order Unicode byt
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Java I/O the files to be stored in
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9.3.3.2 Open the next zip entry Jav
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Java I/O Better checksum schemes us
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} } int b; while ((b = in.read()) !
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Java I/O example, under Unix, to ma
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Java I/O archive. If the signatures
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Java I/O public JarFile(String file
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Java I/O The java.util.jar.Attribut
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9.5.7 Manifest Java I/O What the ja
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public ZipEntry getNextEntry() thro
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Java I/O so throw a java.lang.Unsup
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within the space of the next few li
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Chapter 10. Cryptographic Streams J
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Java I/O • It should be difficult
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Figure 10.1. The four steps to calc
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Java I/O you only want to detect si
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public void reset() Java I/O In pra
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Java I/O After each successful call
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} byte[] result = md.digest(); for
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} } catch (Exception e) {System.err
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public class EasyFileDigest { publi
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Java I/O them your encryption (publ
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Java I/O DES, triple DES (DESede),
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IDEA RC2 RC4 Blowfish Java I/O The
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Figure 10.2. Encrypting data Java I
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} } catch (NoSuchAlgorithmException
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} } Java I/O } catch (InvalidKeySpe
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SecretKey blowfishKey = blowfishKey
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Java I/O public final byte[] doFina
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Java I/O A CipherInputStream object
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10.6.2 CipherOutputStream CipherOut
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} } byte[] newDigest = sha.digest()
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} } else if (args[firstFile].equals
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Java I/O Note how little we had to
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Chapter 11. Object Serialization Ja
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Java I/O To write an object onto a
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Java I/O Needless to say, this is a
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Java I/O java.awt.image.renderable
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Java I/O are not serializable, then
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11.5.1.5 Making nonserializable fie
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Java I/O output streams, but DataIn
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Figure 11.2. The serialver GUI Java
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public SerializableZipFile(File fil
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public class NetworkWindow extends
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private void writeObject(ObjectOutp
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} } Vector v = (Vector) oin.readObj
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Java I/O the resolveClass() method
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Example 11.6. Person import java.ut
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public class SealedPoint { } public
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Chapter 12. Working with Files Java
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Java I/O not begin with an @. Under
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Java I/O placing a minus sign befor
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Java I/O rush to snap up all the go
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System Properties System properties
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Java I/O complete list of the ASCII
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Win32 index.html MacOS index.html N
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Java I/O The path argument should b
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Java I/O assume the array returned
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Example 12.2. Paths import java.io.
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String canonicalPath = f.getCanonic
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Java I/O The isHidden() method, onl
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12.3.4 Manipulating Files Java I/O
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fin.close(); src.delete(); Java I/O
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public int hashCode() public boolea
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public class DirList { } File direc
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12.4 Filename Filters Java I/O You
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} } for (int i = 0; i < htmlFiles.l
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public RandomAccessFile(File file,
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Java I/O • Do not parse pathnames
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Figure 13.2. Motif standard Open di
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Java I/O Example 13.1 is a program
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} } // Work around annoying AWT non
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} // Clean up our windows, they won
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13.2.2 Displaying File Choosers Jav
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13.2.5 Custom Dialogs Java I/O File
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Figure 13.4. The choosable file fil
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Example 13.7. JavaChooser import ja
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13.2.7 Selecting Directories Java I
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public void setFileView(fileView) p
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13.2.12.1 Action events Java I/O Wh
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public TextFilePreview(JFileChooser
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13.3 File Viewer, Part 6 Java I/O W
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} } } theView.setText(""); OutputSt
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} } return deflated.isSelected(); p
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Java I/O Chapter 14. Multilingual C
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Java I/O the upper 128 characters o
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makeBlock("Telugu", 0x0C00, 0x0C7F)
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} } for (int i = 0; i < names.lengt
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14.3 Unicode Escapes Java I/O Curre
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0 0 0 0 0 x10 x9 x8 x7 x6 x5 x4 x3
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Character g = new Character('g'); C
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Java I/O two Latin letters. In uppe
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Java I/O tie, and a few similar cha
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Java I/O The most common type of ch
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Java I/O encoding into a new file c
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Java I/O String openingLineInUnicod
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Java I/O For example, given some Wr
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The flush() and close() methods flu
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15.4 The InputStreamReader Class Th
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Java I/O Similarly, to write text i
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Java I/O These methods behave like
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Java I/O Since string objects are i
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This class has three constructors t
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Do not use the newLine() method if
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Example 15.5. The cat Program impor
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There are four constructors in this
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PipedReader pr = new PipedReader();
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Example 15.7. SourceReader package
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Java I/O question is what to do if
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Java I/O numeric data. If they choo
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} public boolean isText() { if (thi
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default: } } else { LittleEndianInp
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public void init() { } this.addWind
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Chapter 16. Formatted I/O with java
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Java I/O variable salary 12 places
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Hebrew Hebrew Israel iw Hungarian R
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For example: Java I/O NumberFormat
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public void setMaximumIntegerDigits
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Java I/O Like other aspects of text
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Example 16.5. PercentTable import j
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Java I/O align the decimal points i
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Figure 16.1. The PrettiestTable app
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Java I/O This whole class is just a
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Java I/O Most number formats are in
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Page 426 and 427: Arabic (Saudi Arabia) Arabic (Sudan
Page 428 and 429: Slovak #,##0.### -1 234,56 #,##0.00
Page 430 and 431: 16.6.2.1 Utility methods Java I/O F
Page 432 and 433: ** * Concrete class for formatting
Page 434 and 435: } String integerField = digits.subs
Page 436 and 437: Chapter 17. The Java Communications
Page 438 and 439: javax.comm.CommPortIdentifier@be4c9
Page 440 and 441: } } } switch(com.getPortType()) { c
Page 442 and 443: Java I/O In this example, you see t
Page 444 and 445: 17.2.5 Registering Ports For comple
Page 446 and 447: } public void run() { } try { byte[
Page 448 and 449: Java I/O The output buffer size is
Page 450 and 451: Java I/O Here's the results for bot
Page 452 and 453: Java I/O If the requested values ar
Page 454 and 455: Figure 17.1. PC DB-25 serial port t
Page 456 and 457: public abstract void setRTS(boolean
Page 458 and 459: Java I/O Steps 1 and 2 should be fa
Page 460 and 461: Java I/O standard messages on other
Page 462 and 463: Java I/O serial port events: when t
Page 464 and 465: 17.5.5.3 Step 3 Java I/O In many ci
Page 466 and 467: Appendix A. Additional Resources Ja
Page 468 and 469: A.5 Data Compression Java I/O Java
Page 470 and 471: Java I/O "Developing International
Page 472 and 473: Appendix B. Character Sets Java I/O
Page 476 and 477: Java I/O Cp857 DOS ASCII plus Turki
Page 478 and 479: Java I/O As extensive as this list
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