Data流文件读写

//Data流文件读写
import java.io.IOException;
import java.io.EOFException;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.File;

public class RAWBF
{ 
 protected RAWBF(){}
 public static void main(String[] args) throws IOException
 {
 try{ 
  File fi1 = new File("ViewMonth.java");
  /*File fo1 = new File("E:\\ViewMonth.java");
  System.out.println(""+fi1.length()+"\n");
  System.out.println(""+fi1.canRead()+"\n");
  System.out.println(""+fi1.canWrite()+"\n");
  System.out.println(""+fi1.exists()+"\n");
  System.out.println(""+fi1.getAbsoluteFile()+"\n");
  System.out.println(""+fi1.getAbsolutePath()+"\n");
  System.out.println(""+fi1.getCanonicalFile()+"\n");
  System.out.println(""+fi1.getCanonicalPath()+"\n");
  System.out.println(""+fi1.getName()+"\n");
  System.out.println(""+fi1.hashCode()+"\n");
  System.out.println(""+fi1.isHidden()+"\n");
  System.out.println(""+fi1.lastModified()+"\n");
  System.out.println(""+fi1.list()+"\n");
  System.out.println(""+fi1.listRoots()+"\n");
  System.out.println(""+fi1.toString()+"\n");
  System.out.println(""+fi1.toURI()+"\n");
  System.out.println(""+fi1.toURL()+"\n");*/
  //File fi11 =
   new File("1.java");
  //System.out.println(""+fi11.compareTo()+"\n");
  //System.out.println(""+fi11.deleteOnExit()+"\n");
  System.out.println(""+fi1.getClass()+"\n");
  System.out.println(""+fi1.getParent()+"\n");
  System.out.println(""+fi1.list()+"\n");
  System.out.println("\t\t\t\t\t\t\t\n");
  /*System.out.println(""+fo1.length()+"\n");*/
  
  FileInputStream fi= new FileInputStream("ViewMonth.java");
  DataInputStream di= new DataInputStream(fi);
  
  FileOutputStream fo= new FileOutputStream("E:\\ViewMonth.java");
  
  DataOutputStream dos= new DataOutputStream(fo);
  int a;
  while((a=di.read())!=-1){dos.write(a);}
   fi.close();dos.close();
  } 
 catch(EOFException ee){System.out.println("EOF reached");}
 catch(IOException e){System.out.println("IOerror:"+e);}
 System.out.println("yes successed!");
 }
}