import java.io.*;

public class PrintStreamDemo
{
 public static void main(String[] args)throws IOException
 {
  try
  {
   FileInputStream fis = new FileInputStream (FileDescriptor.in);//指定输入流为键盘
   PrintStream ps = new PrintStream (new FileOutputStream ("D://testfile//file.log"), true);
   int is;
   while ((is=fis.read()) != -1)ps.println((char)is);
   fis.close();
   ps.close();
  }
  catch(FileNotFoundException e)
  {
   System.out.println(e);
  }
  catch(IOException e)
  {
   System.out.println(e);
  }
  catch(Exception e)
  {
   System.out.println(e);
  }
 }
}

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