IO: Buffering

Explanation of principle: http://ifeve.com/java-io-char-buffered-filter/

Bufferedinputstream byte stream Input buffer:

1 voidBufferedinputstream () {2         //Bufferedinputstream with buffers, multithreading visible3         //Reading Chinese will be garbled4         //no ReadLine ()5File File =NewFile ("E:\\abcdata.txt");6InputStream InputStream =NULL;7Bufferedinputstream bis =NULL;8         byte[] B =New byte[1024];9         intLen;TenStringBuilder SB =NewStringBuilder (); One         Try { AInputStream =Newfileinputstream (file); -bis =NewBufferedinputstream (inputstream); -              while(len = Bis.read (b))! =-1) { theString string =NewString (b, 0, Len, "UTF-8")); - sb.append (string); -             } - System.out.println (SB); +}Catch(FileNotFoundException e) { -             //TODO auto-generated Catch block + e.printstacktrace (); A}Catch(IOException e) { at             //TODO auto-generated Catch block - e.printstacktrace (); -}finally { -             if(bis! =NULL) { -                 Try { - bis.close (); in}Catch(IOException e) { -                     //TODO auto-generated Catch block to e.printstacktrace (); +                 } -             } the         } *  $}

Bufferedoutputstream byte throttle Output buffer:

1 voidBufferedoutputstream () {2File File =NewFile ("E:\\abcdata.txt");3OutputStream OutputStream =NULL;4Bufferedoutputstream BOS =NULL;5         byte[] B =New byte[1024];6String s = "Test output!! ";7         Try {8OutputStream =NewFileOutputStream (file,true);9BOS =NewBufferedoutputstream (outputstream);Tenb =s.getbytes (); One Bos.write (b); A             //Refresh Buffering - Bos.flush (); -}Catch(FileNotFoundException e) { the             //TODO auto-generated Catch block - e.printstacktrace (); -}Catch(IOException e) { -             //TODO auto-generated Catch block + e.printstacktrace (); -}finally { +             if(Bos! =NULL) { A                 Try { at bos.close (); -}Catch(IOException e) { -                     //TODO auto-generated Catch block - e.printstacktrace (); -                 } -             } in         } -}

BufferedReader character stream Input buffer:

1 voidBufferedReader () {2File File =NewFile ("E:\\test.txt");3BufferedReader br =NULL;4Reader reader =NULL;5 string string;6StringBuilder SB =NewStringBuilder ();7         Try {8Reader =Newfilereader (file);9BR =NewBufferedReader (reader);Ten              while(String = Br.readline ())! =NULL) { One sb.append (string); A             } - System.out.println (SB); -}Catch(FileNotFoundException e) { the             //TODO auto-generated Catch block - e.printstacktrace (); -}Catch(IOException e) { -             //TODO auto-generated Catch block + e.printstacktrace (); -}finally { +             if(BR! =NULL) { A                 Try { at br.close (); -}Catch(IOException e) { -                     //TODO auto-generated Catch block - e.printstacktrace (); -                 } -             } in         } -  to}

BufferedWriter character stream output buffering:

1 voidBufferedWriter () {2File File =NewFile ("E:\\test.txt");3Writer writer =NULL;4BufferedWriter BW =NULL;5String string = "Test Tests!! ";6         Try {7writer =NewFileWriter (file,true);8BW =NewBufferedWriter (writer);9 bw.write (string);Ten Bw.flush (); One}Catch(IOException e) { A             //TODO auto-generated Catch block - e.printstacktrace (); -}finally { the             if(BW! =NULL) { -                 Try { - bw.close (); -}Catch(IOException e) { +                     //TODO auto-generated Catch block - e.printstacktrace (); +                 } A             } at         } -  -}

IO: Buffering