Java IO.pdf - Nguyen Dang Binh

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III: Filter Streams ............................................. 6. Filter Streams ............................................... 6.1 The Filter Stream Classes ...................................... 6.2 The Filter Stream Subclasses ................................... 6.3 Buffered Streams ........................................... 6.4 PushbackInputStream ........................................ 6.5 Print Streams .............................................. 6.6 Multitarget Output Streams ..................................... 6.7 File Viewer, Part 2 .......................................... 7. Data Streams ............................................... 7.1 The Data Stream Classes ...................................... 7.2 Reading and Writing Integers ................................... 7.3 Reading and Writing Floating-Point Numbers ........................ 7.4 Reading and Writing Booleans .................................. 7.5 Reading Byte Arrays ......................................... 7.6 Reading and Writing Text ..................................... 7.7 Miscellaneous Methods ....................................... 7.8 Reading and Writing Little-Endian Numbers ......................... 7.9 Thread Safety ............................................. 7.10 File Viewer, Part 3 ......................................... 8. Streams in Memory ........................................... 8.1 Sequence Input Streams ....................................... 8.2 Byte Array Streams .......................................... 8.3 Communicating Between Threads with Piped Streams ................... 9. Compressing Streams ......................................... 9.1 Inflaters and Deflaters ........................................ 9.2 Compressing and Decompressing Streams ........................... 9.3 Working with Zip Files ....................................... 9.4 Checksums ............................................... 9.5 JAR Files ................................................ 9.6 File Viewer, Part 4 .......................................... 10. Cryptographic Streams ....................................... 10.1 Hash Function Basics ....................................... 10.2 The MessageDigest Class ..................................... 10.3 Digest Streams ............................................ 10.4 Encryption Basics .......................................... 10.5 The Cipher Class .......................................... 10.6 Cipher Streams ............................................ 10.7 File Viewer, Part 5 ......................................... IV: Advanced and Miscellaneous Topics .............................. 11. Object Serialization .......................................... 11.1 Reading and Writing Objects ................................... 11.2 Object Streams ............................................ 11.3 How Object Serialization Works ................................ 11.4 Performance ............................................. 11.5 The Serializable Interface ..................................... 11.6 The ObjectInput and ObjectOutput Interfaces ........................ 11.7 Versioning ............................................... 11.8 Customizing the Serialization Format ............................. 11.9 Resolving Classes .......................................... 11.10 Resolving Objects ......................................... 74 75 75 80 81 83 84 85 89 96 96 98 103 106 106 107 111 111 123 124 131 131 132 135 140 140 152 159 172 176 189 193 193 195 203 209 212 225 231 236 237 237 238 239 241 241 247 249 251 260 261
11.11 Validation .............................................. 11.12 Sealed Objects ........................................... 12. Working with Files .......................................... 12.1 Understanding Files ......................................... 12.2 Directories and Paths ........................................ 12.3 The File Class ............................................ 12.4 Filename Filters ........................................... 12.5 File Filters ............................................... 12.6 File Descriptors ........................................... 12.7 Random-Access Files ....................................... 12.8 General Techniques for Cross-Platform File Access Code ................ 13. File Dialogs and Choosers ...................................... 13.1 File Dialogs .............................................. 13.2 JfileChooser .............................................. 13.3 File Viewer, Part 6 ......................................... 14. Multilingual Character Sets and Unicode ........................... 14.1 Unicode ................................................ 14.2 Displaying Unicode Text ..................................... 14.3 Unicode Escapes ........................................... 14.4 UTF-8 ................................................. 14.5 The char Data Type ......................................... 14.6 Other Encodings ........................................... 14.7 Converting Between Byte Arrays and Strings ........................ 15. Readers and Writers ......................................... 15.1 The java.io.Writer Class ...................................... 15.2 The OutputStreamWriter Class ................................. 15.3 The java.io.Reader Class ..................................... 15.4 The InputStreamReader Class .................................. 15.5 Character Array Readers and Writers ............................. 15.6 String Readers and Writers .................................... 15.7 Reading and Writing Files .................................... 15.8 Buffered Readers and Writers .................................. 15.9 Print Writers ............................................. 15.10 Piped Readers and Writers ................................... 15.11 Filtered Readers and Writers .................................. 15.12 File Viewer Finis .......................................... 16. Formatted I/O with java.text .................................... 16.1 The Old Way ............................................. 16.2 Choosing a Locale .......................................... 16.3 Number Formats ........................................... 16.4 Specifying Width with FieldPosition .............................. 16.5 Parsing Input ............................................. 16.6 Decimal Formats .......................................... 16.7 An Exponential Number Format ................................ 17. The <strong>Java</strong> Communications API .................................. 17.1 The Architecture of the <strong>Java</strong> Communications API .................... 17.2 Identifying Ports ........................................... 17.3 Communicating with a Device on a Port ........................... 17.4 Serial Ports .............................................. 17.5 Parallel Ports ............................................. 261 263 267 267 274 280 299 300 301 302 304 306 306 313 331 337 337 338 345 346 348 356 357 360 360 361 363 365 366 369 372 374 378 380 381 386 395 395 397 400 408 412 414 423 429 429 430 437 443 452
Page 2 and 3: Java I/O Elliotte Rusty Harold Publ
Page 6 and 7: V: Appendixes .....................
Page 8 and 9: Preface Java I/O In many ways this
Page 10 and 11: Java I/O operations from moving byt
Page 12 and 13: Chapter 9 Chapter 10 Java I/O Chapt
Page 14 and 15: Chapter 17 Java I/O lining up the d
Page 16 and 17: Security Issues Java I/O I don't kn
Page 18 and 19: Java I/O Finally, although many of
Page 20 and 21: Part I: Basic I/O Java I/O 13
Page 22 and 23: Java I/O The word stream is derived
Page 24 and 25: Java I/O The java.util.jar package
Page 26 and 27: Java I/O For instance, according to
Page 28 and 29: Java I/O Java understands several d
Page 30 and 31: Java I/O commonly use an eight-bit
Page 32 and 33: Java I/O For the most part, these c
Page 34 and 35: Figure 1.1. An xterm console on Uni
Page 36 and 37: Java I/O If you absolutely must use
Page 38 and 39: Java I/O in Apple's Macintosh Runti
Page 40 and 41: Java I/O to work inside a web brows
Page 42 and 43: Java I/O bit pattern to a particula
Page 44 and 45: Java I/O The output is the same as
Page 46 and 47: OutputStream out = new NullOutputSt
Page 48 and 49: Figure 2.1. The StreamedTextArea co
Page 50 and 51: Java I/O When you call read(), you
Page 52 and 53: 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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public int getMultiplier() public v
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Arabic (Saudi Arabia) Arabic (Sudan
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Slovak #,##0.### -1 234,56 #,##0.00
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16.6.2.1 Utility methods Java I/O F
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** * Concrete class for formatting
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} String integerField = digits.subs
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Chapter 17. The Java Communications
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javax.comm.CommPortIdentifier@be4c9
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} } } switch(com.getPortType()) { c
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Java I/O In this example, you see t
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17.2.5 Registering Ports For comple
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} public void run() { } try { byte[
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Java I/O The output buffer size is
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Java I/O Here's the results for bot
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Java I/O If the requested values ar
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Figure 17.1. PC DB-25 serial port t
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public abstract void setRTS(boolean
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Java I/O Steps 1 and 2 should be fa
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Java I/O standard messages on other
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Java I/O serial port events: when t
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17.5.5.3 Step 3 Java I/O In many ci
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Appendix A. Additional Resources Ja
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A.5 Data Compression Java I/O Java
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Java I/O "Developing International
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Appendix B. Character Sets Java I/O
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151 epa (end of guarded area) 183
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Java I/O Cp857 DOS ASCII plus Turki
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Java I/O As extensive as this list
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