I need to replace code using RandomAccessFile
with one that uses in-memory byte buffer (such as byte[]
or derivatives like ByteArrayInputStre
I had the same problem. RandomAccessFile has many finale and native methods, so it cannot be overloaded.
I ended to create my own SeekableInputStream abstract class by stealing this one without readfully : https://github.com/samtools/htsjdk/blob/master/src/java/htsjdk/samtools/seekablestream/SeekableStream.java
I defined SeekableFileInputStream which uses RandomAccessFile.
I defined SeekableByteArrayInputStream, which is easy to define. This class, is also able to get any InputStream, to transform it into a byte array, so this is a kind of cached stream.
ByteArrayInputStream can do it:
read()
works the same.seek(n)
can be replaced with reset()
followed by skip(n)
May I suggest Java NIO (New I/O) check this simple and small tutorial
I happen to have one of these -- I uploaded it to http://home.arcor.de/joriki/seekable-byte-array.zip -- hope that helps.