- All Implemented Interfaces:
public class RandomAccessFileByteReader extends ObjectAn implementation of the ByteReader interface that provides access to a RandomAccessFile. This implementation uses buffering to limit the number of calls to the methods of the
RandomAccessFileclass. This is because such methods use JNI and any calls to native code from Java are very slow. This class is not threadsafe. It is not safe to pass an instance of this class to multiple threads. It is not safe to pass an instance of this class to multiple users even if in the same thread. It is not safe to give the same RandomAccessFile to multiple instances of this class.
All Methods Instance Methods Concrete Methods Modifier and Type Method Description
ByteReaderand releases any system resources associated with this stream.
length()Returns the number of total bytes in the repository that are visible through this API.
read(long position)Read a single byte from the underlying bytes at the given position.
read(long position, byte b, int offset, int length)Transfers bytes from the underlying repository into the given destination array.
public RandomAccessFileByteReader(RandomAccessFile file)Constructor.
file- the file to wrap.
public int read(long position) throws IOExceptionRead a single byte from the underlying bytes at the given position.
public int read(long position, byte b, int offset, int length) throws IOExceptionTransfers bytes from the underlying repository into the given destination array. Copy up to
lengthbytes from the repository starting at the postion given into the given array starting at the given offset.
- Specified by:
position- the position to read the byte from.
b- the array to write the bytes into.
offset- the offset in the array at which the first byte is written.
length- the maximum number of bytes to write into the array.
- the number of bytes actually written to the array.
IOException- if an error occurs during the read operation
- See Also:
ByteReader.read(long, byte, int, int)
public long length() throws IOExceptionReturns the number of total bytes in the repository that are visible through this API.