JAVA BufferStream,流的例子

import java.io.*;

class BufferStream1
{
 public static void main(String args[])
 {
  try
  {
      BufferedOutputStream out=new BufferedOutputStream(new FileOutputStream("hello.txt"));
   out.write("hello world!! my friends".getBytes());
   out.close();
  }
  catch(IOException e)
  {
   e.printStackTrace();
  }

  try
  {
   BufferedInputStream in = new BufferedInputStream(new FileInputStream("hello.txt"));
   int c;
  
   while((c=in.read())!=-1)
    System.out.print((char)c);
   
   System.out.println();
  }
  catch(IOException e)
  {
   e.printStackTrace();
  }
 }
}