The Stream Classes

Most stream classes are part of the java.io package. (There are also a few more in the sun.io and sun.net packages, but those are deliberately hidden from you. There are also a couple in java.util.zip.) 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, including:

• BufferedInputStream
• BufferedOutputStream
• ByteArrayInputStream
• ByteArrayOutputStream
• DataInputStream
• DataOutputStream
• FileInputStream
• FileOutputStream
• FilterInputStream
• FilterOutputStream
• LineNumberInputStream
• ObjectInputStream
• ObjectOutputStream
• PipedInputStream
• PipedOutputStream
• PrintStream
• PushbackInputStream
• SequenceInputStream
• StringBufferInputStream