Java-IO：複製文件

 1 import java.io.FileInputStream;  2 import java.io.FileNotFoundException;  3 import java.io.FileOutputStream;  4 import java.io.IOException;  5 
 6 public class CopyFileDemo {  7     public static void main(String[] args) {  8 
 9         FileInputStream fis = null; 10         FileOutputStream fos = null; 11         try { 12             fis = new FileInputStream("js.mp3"); 13             fos = new FileOutputStream("copy_js.mp3"); 14             // BufferedInputStream bis=new BufferedInputStream(fis); 15             // BufferedOutputStream bos=new BufferedOutputStream(fos);
16             byte[] bt = new byte[1024]; 17             int len = 0; 18             while ((len = fis.read(bt)) != -1) { 19                 fos.write(bt, 0, len); 20  } 21         } catch (FileNotFoundException e) { 22  e.printStackTrace(); 23         } catch (IOException e) { 24  e.printStackTrace(); 25         } finally { 26             try { 27                 if (fis != null) 28  fis.close(); 29                 if (fos != null) 30  fos.close(); 31             } catch (IOException e) { 32  e.printStackTrace(); 33  } 34  } 35  } 36 }