Resumo dos Fluxos de Dados em Java (2)

Type of I/O	Streams	Description
Memory	CharArrayReader CharArrayWriter ByteArrayInputStream ByteArrayOutputStream	Read from and write to memory. Create on an existing array and then use the read and write methods to read from or write to the array.
Memory	StringReader StringWriter StringBufferInputStream	top>StringReader reads characters from a String in memory.StringWriter writes to a String, collecting characters written to it in a StringBuffer, which can then be converted to a String.StringBufferInputStream is similar to StringReader, except that it reads bytes from a StringBuffer.
Pipe	PipedReader PipedWriter PipedInputStream PipedOutputStream	Implement the input and output components of a pipe. Pipes are used to channel the output from one thread into the input of another.
File	FileReader FileWriter FileInputStream FileOutputStream	Collectively called file streams, these streams are used to read from or write to a file on the native file system.
Concatenation	N/A SequenceInputStream	Concatenates multiple input streams into one input stream.
Object Serialization	N/A ObjectInputStream ObjectOutputStream	Used to serialize objects.
Data Conversion	N/A DataInputStream DataOutputStream	Read or write primitive data types in a machine-independent format.
Counting	LineNumberReader LineNumberInputStream	Keeps track of line numbers while reading.
Peeking Ahead	PushbackReader PushbackInputStream	These input streams each have a pushback buffer. When reading data from a stream, it is sometimes useful to peek at the next few bytes or characters in the stream to decide what to do next.
Printing	PrintWriter PrintStream	Contain convenient printing methods. These are the easiest streams to write to, so you will often see other writable streams wrapped in one of these.
Buffering	BufferedReader BufferedWriter BufferedInputStream BufferedOutputStream	Buffer data while reading or writing, thereby reducing the number of accesses required on the original data source. Buffered streams are typically more efficient than similar nonbuffered streams and are often used with other streams.
Filters	FilterReader FilterWriter FilterInputStream FilterOutputStream	These abstract classes define the interface for filter streams, which filter data as it’s being read or written.
Convert	InputStreamReader OutputStreamWriter	Convert byte streams to character streams, and vice-versa.InputStreamReaders read bytes from InputStreams and convert them to characters. OutputStreamWriters convert characters to bytes and write to an OutputStream. Default character encodings are stored in System.getProperty(”file.encoding”).