How To Copy The File

156 New Member

Dear All ,
May i know how to copy the file from source to destination folder in java
if it is any class available in java

Or i have read the Source File from content and write it into a destination folder file
if it is any class for copying the files means it very useful for me

Nov 5 '08 #1

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2159

r035198x

13,262

MVP

Open the API specs for the File class and check the methods there.

Nov 5 '08 #2

karthickkuchanur

156

New Member

Open the API specs for the File class and check the methods there.

There no such method to copy the file from source to destination

Nov 5 '08 #3

JosAH

11,448

Recognized Expert MVP

There no such method to copy the file from source to destination

If reading that little bit of API documentation didn't give you that tickling feeling
of curiosity to read more then programming is absolutely not for you.

kind regards,

Jos

Nov 5 '08 #4

karthickkuchanur

156

New Member

If reading that little bit of API documentation didn't give you that tickling feeling
of curiosity to read more then programming is absolutely not for you.

kind regards,

Jos

Iam more confident that iam not able to do with file class iam right

Nov 5 '08 #5

JosAH

11,448

Recognized Expert MVP

Iam more confident that iam not able to do with file class iam right

Ok, you're about sure that you can't copy a file by just using the File class. And
now what? Are you simply going to wait until somebody else takes you by the
hand and solves the problem for you? If so, programming is not for you. Go and
read the API documentation; the solution is in there; hint: FileInputStream and
FileOutputStream.

Jos

Nov 5 '08 #6

chaarmann

785

Recognized Expert Contributor

Iam more confident that iam not able to do with file class iam right

There is no ready-made method that copies a file, as far as I know.
Maybe because it's so short and easy to do it yourself.

More hints:
If you already have defined the fileInputStream and fileOutputStream and the "byte[] buffer = new byte[4096]", and "int bytesRead", then you need only 2 lines more of source code to copy the file, using a while-loop. hint: read about read() and write() methods of the streams!

Nov 5 '08 #7

r035198x

13,262

MVP

Iam more confident that iam not able to do with file class iam right

There is a method called renameTo. What does it do? How can you use it to simulate a copy in a few steps?

Nov 5 '08 #8

karthickkuchanur

156

New Member

There is no ready-made method that copies a file, as far as I know.
Maybe because it's so short and easy to do it yourself.

More hints:
If you already have defined the fileInputStream and fileOutputStream and the "byte[] buffer = new byte[4096]", and "int bytesRead", then you need only 2 lines more of source code to copy the file, using a while-loop. hint: read about read() and write() methods of the streams!

Thanks a lot

Expand|Select|Wrap|Line Numbers

 public class MovingFile{
 
  public static void main(String[] args) throws IOException{
 
            File srFile = new File("/home/check/Backup/comm.jar");

            File dtFile = new File("/home/check/Screen Shots/comm.jar");
 
            if (srFile.exists()) {

             InputStream inputStream = new FileInputStream(srFile);
 
             if (!dtFile.exists()) {

              OutputStream outputStream = new FileOutputStream(dtFile);
 
            byte[] buf = new byte[1024];

            int len;
 
            while ((len = inputStream.read(buf)) > 0) {

             outputStream.write(buf, 0, len);

            }

            outputStream.close();
 
             } else {

              System.out.println("Designation File already Exist...");

             }

           inputStream.close();
 
            } else {

             System.out.println("Source File is not Exist...");

            }
 
        }

}

Nov 6 '08 #9

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