在java中读取文件中的内容

 1 package shi;
 2 
 3 import java.io.*;
 4 
 5 public class wenjianIO {
 6     public static void main(String agrs[]){
 7         FileInputStream fis=null;
 8         File f=new File("F:/test/javakc.txt");
 9         
10         try {
11             fis=new FileInputStream(f);
12             byte[]arr=new byte[(int)f.length()];
13             fis.read(arr);
14             String str= new String (arr);
15             System.out.println(str);
16             
17         } catch (FileNotFoundException e) {
18             // TODO Auto-generated catch block
19             e.printStackTrace();
20         } catch (IOException e) {
21             // TODO Auto-generated catch block
22             e.printStackTrace();
23         }
24         finally{
25             if(fis!=null){
26                 try{
27                     fis.close();
28                 }
29                 catch(IOException e){
30                     e.printStackTrace();
31                 }
32             }
33         }
34         
35     }
36 
37 }

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