第四篇学习笔记
import java.io.*; public class CopyFile { /** * @param args */ public static void copy(File a,File b){ try { FileInputStream fis = new FileInputStream("a.mp3"); FileOutputStream fos = new FileOutputStream("temp.mp3"); byte[] buf = new byte[330217]; int length; int read = fis.read(); while((length = fis.read(buf))!=-1){ fos.write(buf, 0, length); // } fis.close(); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void main(String[] args) { // TODO Auto-generated method stub File a = new File(""); File b = new File(""); long start,end; start = System.currentTimeMillis(); copy(a,b); end = System.currentTimeMillis(); System.out.println("用时:" + (end - start) + "ms"); // } }
posted on 2016-04-08 20:50 软二2014330217吕锦涛 阅读(130) 评论(0) 编辑 收藏 举报