IO byte stream in Java

Order of closing streams:

　　* When a depends on B, turn off A and then close B
* Flush is performed once the buffered stream is last closed

bytearrayinputstream : is a byte array input stream, which acts as a byte string (or an array of bytes ) into the form of an input stream

1  PackageObject.io;2 3 ImportJava.io.ByteArrayInputStream;4 ImportJava.io.ByteArrayOutputStream;5 ImportJava.io.FileOutputStream;6 Importjava.io.IOException;7 8  Public classBytearraystream {9 Ten      Public Static voidMain (string[] args)throwsIOException { One         //TODO auto-generated Method Stub A         byte[] b=New byte[]{' A ', ' B ', ' C '}; -         //turn byte input into a stream -Bytearrayinputstream input=NewBytearrayinputstream (b); theBytearrayoutputstream output=NewBytearrayoutputstream (); -FileOutputStream fileout=NewFileOutputStream ("D:\\Program Files (x86) \\io\\ByteArray.txt"); -         intlength; -          while((Length=input.read ())!=-1){ + fileout.write (length); -         } +         //flushes the contents of the buffer to the output stream A Output.writeto (fileout); at input.close (); - output.close (); - fileout.close (); -     } -      -  in}

sequenceinputstream : Merging multiple files into one file

1  PackageObject.io;2 3 ImportJava.io.FileInputStream;4 Importjava.io.FileNotFoundException;5 ImportJava.io.FileOutputStream;6 Importjava.io.IOException;7 ImportJava.io.SequenceInputStream;8 Importjava.util.ArrayList;9 Importjava.util.Collections;Ten Importjava.util.Enumeration; One Importjava.util.List; A  -  -  Public classSequencestream { the      -     //merging multiple files into one file -      Public Static voidMain (string[] args)throwsIOException { -         //TODO auto-generated Method Stub +      -FileInputStream f1=NewFileInputStream ("D:\\Program Files (x86) \\io\\sequence1.txt"); +FileInputStream f2=NewFileInputStream ("D:\\Program Files (x86) \\io\\sequence2.txt"); AFileInputStream f3=NewFileInputStream ("D:\\Program Files (x86) \\io\\sequence3.txt"); atList<fileinputstream> list=NewArraylist<fileinputstream>(); - List.add (F1); - List.add (F2); - List.add (F3); -          -         //converting a collection to an enumeration type inEnumeration<fileinputstream> e=collections.enumeration (list); -          to         //The enumeration type is received, as shown in +Sequenceinputstream s=NewSequenceinputstream (e); -          theFileOutputStream outputstream=NewFileOutputStream ("D:\\Program Files (x86) \\io\\sequence4.txt"); *         intlength; $          while((Length=s.read ())!=-1){Panax Notoginseng outputstream.write (length); -         } the f1.close (); + f2.close (); A f3.close (); the s.close (); + outputstream.close (); -     } $  $}

Bufferedinputstream : A buffered byte input stream, which is an advanced stream (processing stream) that is used in conjunction with other low-level streams to wrap the other streams together. High efficiency

Bufferedinputstream:

1  PackageObject.io;2 3 ImportJava.io.BufferedInputStream;4 ImportJava.io.BufferedOutputStream;5 ImportJava.io.FileInputStream;6 ImportJava.io.FileOutputStream;7 Importjava.io.IOException;8 9  Public classBufferstream {Ten      Public Static voidMain (string[] args)throwsIOException { OneFileInputStream input=NewFileInputStream ("D:\\Program Files (x86) \\io\\bufferStream1.txt"); ABufferedinputstream binput=Newbufferedinputstream (input); -FileOutputStream output=NewFileOutputStream ("D:\\Program Files (x86) \\io\\bufferStream2.txt"); -Bufferedoutputstream boutput=Newbufferedoutputstream (output); the         intlength; -          while((Length=binput.read ())!=-1){ - boutput.write (length); -         } +         //flushes the contents of a buffer to a file - Boutput.flush (); + input.close (); A binput.close (); at output.close (); - boutput.close (); -     } -}

IO byte stream in Java