Learn about the NIO module in Java

A lot of online information, but to write code, my age of people have a little memory.

Reference URL:

http://blog.csdn.net/wuxianglong/article/details/6612282

 PackageCom.cg.io;ImportJava.io.*;ImportJava.nio.*;Importjava.nio.channels.*; Public classTestintbuffer {Static Private Final byteMessage[] = {83, 111, 109, 101, 32, 98, 98}; Static PrivateString fileName = "D:\\hehehe\\test.txt";  Public Static voidMain (string[] args)throwsException {fileoutputstream fout=NewFileOutputStream (fileName); FileChannel FC=Fout.getchannel (); Bytebuffer Bytebuffer= Bytebuffer.allocate (1024); Output ("Initialize", Bytebuffer);  for(inti=0; i<message.length; ++i) {bytebuffer.put (message[i]);    } bytebuffer.flip (); Output ("Call Flip ()", Bytebuffer);    Fc.write (Bytebuffer); Output ("Call Write ()", Bytebuffer);    Fout.close ();    Bytebuffer.clear (); Output ("Call Clear ()", Bytebuffer); FileInputStream Fin=NewFileInputStream (fileName); FC=Fin.getchannel ();    Fc.read (Bytebuffer); Output ("Call Read ()", Bytebuffer);    Bytebuffer.flip (); Output ("Call Flip ()", Bytebuffer);  while(bytebuffer.remaining () > 0) {      byteb =Bytebuffer.get (); System.out.print ( (Char) (b)); } Output ("Call Getchannel ()", Bytebuffer);    Bytebuffer.clear (); Output ("Call Clear ()", Bytebuffer);    Fin.close (); Intbuffer Intbuffer= Intbuffer.allocate (8);  for(inti=0; I < intbuffer.capacity (); ++i) {intj = 2 * (i + 1);    Intbuffer.put (j);    } intbuffer.flip ();  while(Intbuffer.hasremaining ()) {intj =Intbuffer.get (); System.out.print (J+ " "); }  }   Public Static voidoutput (String step, buffer buffer) {System.out.println (step+ " : "); System.out.println ("Capacity:" + buffer.capacity () + ","); System.out.println ("Position:" + buffer.position () + ","); System.out.println ("Limit:" + buffer.limit () + ",");  System.out.println (); }}

Learn about the NIO module in Java