java – Can and How do you use RandomAccessFile with a file contained on an FTP server? – Education Career Blog

This problem pertains to Java

By using RandomAccessFile I intend to be able to also modify the file without blanking it.

The FTP protocol only barely supports random access reads and writes.

That is to say, an FTP client can use the REST command to start reading or writing from a particular offset, but it will always truncate the file from that point.