Class SeekableInputStream

    • Constructor Detail

      • SeekableInputStream

        public SeekableInputStream()
    • Method Detail

      • skip

        public long skip​(long n)
                  throws IOException
        Seeks n bytes forward in this stream.

        This will not seek past the end of the file. If the current position is already at or past the end of the file, this doesn't seek at all and returns 0. Otherwise, if skipping n bytes would cause the position to exceed the stream size, this will do equivalent of seek(length()) and the return value will be adjusted accordingly.

        If n is negative, the position isn't changed and the return value is 0. It doesn't seek backward because it would conflict with the specification of InputStream.skip.

        Overrides:
        skip in class InputStream
        Returns:
        0 if n is negative, less than n if skipping n bytes would seek past the end of the file, n otherwise
        Throws:
        IOException - might be thrown by seek(long)
      • position

        public abstract long position()
                               throws IOException
        Gets the current position in the stream.
        Throws:
        IOException
      • seek

        public abstract void seek​(long pos)
                           throws IOException
        Seeks to the specified absolute position in the stream.

        Seeking past the end of the file should be supported by the subclasses unless there is a good reason to do otherwise. If one has seeked past the end of the stream, read will return -1 to indicate end of stream.

        Parameters:
        pos - new read position in the stream
        Throws:
        IOException - if pos is negative or if a stream-specific I/O error occurs