输入与输出~

代码块：

 1 package com.test;
 2 
 3 import com.sun.deploy.net.FailedDownloadException;
 4 
 5 import java.io.File;
 6 import java.io.FileInputStream;
 7 import java.io.FileOutputStream;
 8 import java.io.IOException;
 9 
10 public class CopyPaste {
11     public static void main(String[] args) {
12         FileInputStream fis = null;
13         FileOutputStream fos = null;
14         try{
15             fis = new FileInputStream("bdqncopy.txt");
16             fos = new FileOutputStream("bdqn.txt");
17 
18             int result = -1;
19             String info = "";
20             System.out.println("能够读取到的字节数："+fis.available());
21             while ((result = fis.read())!=-1){
22                 info +=(char)result;
23             }
24             System.out.println("读取完毕，准备复制");
25             byte[]bytes = info.getBytes();
26             fos.write(bytes,0,bytes.length);
27             System.out.println("复制完毕，请刷新工程查看文件");
28             fos.flush();
29         }catch (FailedDownloadException e){
30             e.printStackTrace();
31         }catch (IOException e){
32             e.printStackTrace();
33         }finally {
34             try{
35                 if (fos!=null){
36                     fos.close();
37                 }
38                 if (fis!=null){
39                     fis.close();
40                 }
41             }catch (IOException e){
42                 e.printStackTrace();
43             }
44         }
45     }
46 }

输出结果：

 

今日更新完毕~over！