The Java Developers Almanac 1.4

e1071. Copying One File to Another

    // Copies src file to dst file.
    // If the dst file does not exist, it is created
    void copy(File src, File dst) throws IOException {
        InputStream in = new FileInputStream(src);
        OutputStream out = new FileOutputStream(dst);
    
        // Transfer bytes from in to out
        byte[] buf = new byte[1024];
        int len;
        while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
        in.close();
        out.close();
    }

Related Examples

e19. Determining If a File or Directory Exists
e20. Creating a File
e21. Getting the Size of a File
e22. Deleting a File
e23. Creating a Temporary File
e24. Renaming a File or Directory
e25. Moving a File or Directory to Another Directory
e26. Getting and Setting the Modification Time of a File or Directory
e27. Forcing Updates to a File to the Disk

See also: Directories    Encodings    Filenames and Pathnames    Parsing    Reading and Writing    Serialization

© 2002 Addison-Wesley.