Java里Stream (byte 流)的主要类

2010-06-22 09:06:41

1.1.2. The Stream Classes
Most of the classes that work directly with streams are part of the java.io package. The two main classes are java.io.InputStream and java.io.OutputStream . These are abstract base classes for many different subclasses with more specialized abilities.

The subclasses include:

BufferedInputStream
BufferedOutputStream
ByteArrayInputStream
ByteArrayOutputStream
DataInputStream
DataOutputStream
FileInputStream
FileOutputStream
FilterInputStream
FilterOutputStream
ObjectInputStream
ObjectOutputStream
PipedInputStream
PipedOutputStream
PrintStream
PushbackInputStream
SequenceInputStream
The java.util.zip package contains four input stream classes that read data in compressed format and return it in uncompressed format and four output stream classes that read data in uncompressed format and write in compressed format. These will be discussed in Chapter 10.

CheckedInputStream
CheckedOutputStream
DeflaterOutputStream
GZIPInputStream
GZIPOutputStream
InflaterInputStream
ZipInputStream
ZipOutputStream
The java.util.jar package includes two stream classes for reading files from JAR archives. These will be discussed in Chapter 11.

JarInputStream
JarOutputStream
The java.security package includes a couple of stream classes used for calculating message digests:

DigestInputStream
DigestOutputStream
The Java Cryptography Extension (JCE) adds two classes for encryption and decryption:

CipherInputStream
CipherOutputStream
These four streams will be discussed in Chapter 12.

Finally, a few random stream classes are hiding inside the sun packagesfor example, sun.net.TelnetInputStream and sun.net.TelnetOutputStream. However, these are deliberately hidden from you and are generally presented as instances of java.io.InputStream or java.io.OutputStream only.