Writes <code>len</code> bytes from the specified byte array starting at offset <code>off</code> to this file output stream.
@param b the data. @param off the start offset in the data. @param len the number of bytes to write. @exception IOException if an I/O error occurs.
See Implementation
Writes <code>len</code> bytes from the specified byte array starting at offset <code>off</code> to this file output stream.
@param b the data. @param off the start offset in the data. @param len the number of bytes to write. @exception IOException if an I/O error occurs.