使用IO进行文件的复制操作

1.字符流通过缓存区进行文件的复制操作：
public class TestPerson {

public static void main(String[] args) {

 BufferedReader br=null;

 BufferedWriter bw=null;

 try {

  br=new BufferedReader(new FileReader("d://jf.txt"));

  bw=new BufferedWriter(new FileWriter("e://fu.txt"));

  String line=null;

  while((line=br.readLine())!=null){

   bw.write(line);

   bw.flush();

   

  }

 } catch (FileNotFoundException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

 } catch (IOException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

 }

 finally{

  if(br!=null){

   try {

    br.close();

   } catch (IOException e) {

    // TODO Auto-generated catch block

    e.printStackTrace();

   }

  }

  if(bw!=null){

   try {

    bw.close();

   } catch (IOException e) {

    // TODO Auto-generated catch block

    e.printStackTrace();

   }

  }

 }

 

}

}

2.字节流的复制操作：

public static void main(String[] args) {

 FileInputStream fis=null;

 FileOutputStream fos=null;

 try {

  fis=new FileInputStream(new File("d://jf.txt"));

  fos=new FileOutputStream(new File("e://fu.txt"));

  byte bt[]=new byte[1024];

  int len=-1;

  while((len=fis.read(bt))!=-1){

   fos.write(bt,0,len);

   fos.flush();

  }

 } catch (FileNotFoundException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

 } catch (IOException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

 }

 finally{

  if(fis!=null){

   try {

    fis.close();

   } catch (IOException e) {

    // TODO Auto-generated catch block

    e.printStackTrace();

   }

  }

  if(fos!=null){

   try {

    fos.close();

   } catch (IOException e) {

    // TODO Auto-generated catch block

    e.printStackTrace();

   }

  }

 }

 

}

}