Java Core class library-io-byte array stream/memory stream

Memory Stream (Array stream):

The data is temporarily present in the array and will be retrieved from the array later.

1. Byte memory stream: Bytearrayinputstream/bytearrayoutputstream

2. Character Memory stream: Chararrayinputstream/chararrayoutputstream

3. String stream: Stringreader/stringwriter (storing data in an array)

BYTE memory stream:

 Public classBytearraydemo { Public Static voidMain (java.lang.string[] args)throwsException {//byte array output stream: program-to-memoryBytearrayoutputstream BOS =NewBytearrayoutputstream (); Bos.write ("ABCD". GetBytes ()); //using the stored temporary data        byte[] buffer =Bos.tobytearray (); //byte array input stream: Memory to programBytearrayinputstream bis =Newbytearrayinputstream (buffer); byte[] Bys =New byte[1024]; intLen =-1;  while(len = Bis.read (bys))! =-1) {System.out.print (NewJava.lang.String (bys,0, Len));        } bos.close ();    Bis.close (); }}

Character array flow: roughly the same as the byte operation.

String Flow:

1  Public classStringwriterreaderdemo {2      Public Static voidMain (string[] args)throwsIOException {3         //the output stream of the string4StringWriter StringWriter =NewStringWriter ();5Stringwriter.write ("How old are You?") ");6Stringwriter.write ("21 years old! ");7 8         //input stream of the string9StringReader StringReader =NewStringReader (stringwriter.tostring ());Ten         Char[] buffer =New Char[1024]; One         intLen =-1; A          while(len = stringreader.read (buffer))! =-1){ -System.out.println (NewString (buffer,0, Len)); -         } the     } -}

Java Core class library-io-byte array stream/memory stream