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Thinking in Java
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Types of OutputStream

This category includes the classes that decide where your output will go: an array of bytes (no String, however; presumably, you can create one using the array of bytes), a file, or a “pipe.”

In addition, the FilterOutputStream provides a base class for "decorator" classes that attach attributes or useful interfaces to output streams. This is discussed later.

Table 12-2. Types of OutputStream

Class

Function

Constructor Arguments

How to use it

ByteArray-OutputStream

Creates a buffer in memory. All the data that you send to the stream is placed in this buffer.

Optional initial size of the buffer.

To designate the destination of your data: Connect it to a FilterOutputStream object to provide a useful interface.

File-OutputStream

For sending information to a file.

A String representing the file name, or a File or FileDescriptor object.

To designate the destination of your data: Connect it to a FilterOutputStream object to provide a useful interface.

Piped-OutputStream

Any information you write to this automatically ends up as input for the associated PipedInput-Stream. Implements the “piping” concept.

PipedInputStream

To designate the destination of your data for multithreading: Connect it to a FilterOutputStream object to provide a useful interface.

Filter-OutputStream

Abstract class that is an interface for decorators that provide useful functionality to the other OutputStream classes. See Table 12-4.

See Table 12-4.

See Table 12-4.

Thinking in Java
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   Reproduced courtesy of Bruce Eckel, MindView, Inc. Design by Interspire