CODEWITHSUNDEEP
java
Arul Vats
Arul Vats

Reputation: 27

Simple file read write code won't work

I have created a simple file read and write program. When compiling, the program shows no errors and runs without problem, but when I try to open the output file, I get a "file corrupted" error, and the size of the file is 0kb.

import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.FileNotFoundException;

public class Extention
{
     FileInputStream filein;
     FileOutputStream fileout;

     void asdf() throws IOException
     {
         InputStreamReader ir = new InputStreamReader(System.in);
         BufferedReader br = new BufferedReader(ir);
         System.out.print("/**");
         System.out.print("\n");
         System.out.print("* Created by Arul on 6/15/2016 *");
         System.out.print("\n");
         System.out.print("**/");
         System.out.print("\n");

         try {
            System.out.print("Enter Name of the file to read : ");
            filein = new FileInputStream(br.readLine());
            System.out.print("Enter Name of the file to write : ");
            fileout = new FileOutputStream(br.readLine());
            int i;
            do {
                i = filein.read();
                if (i == -1)
                    break;
                fileout.write(i);
            } while (i != -1);
        } catch (FileNotFoundException f) {
            System.out.println("Exception : File not found!");
        } finally {
            filein.close();
            fileout.close();
        }

    }

    public static void main(String arg[]) throws IOException
    {
        Extention d = new Extention();
        d.asdf();
    }
}

Upvotes: 1

Views: 66

Answers (1)

Ramsay Domloge
Ramsay Domloge

Reputation: 705

When you say, "File corrupted", is this a Java error which you get during execution of your program, or is this an error when you double click on the created file?

If it's the latter, it all depends on what you are trying to copy. If you used it to copy an TXT file, but you changed the file ending to MP3, you would find that, when you double click on the file, your media player will be selected to open the text file and won't understand the text data.

Upvotes: 1

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