This class reads files byte per byte. Only used by ClassFileParser
Philippe Altherr
1.0, 23/03/2004
return byte at offset 'pos'
extract a byte at position bp from buf
extract a character at position bp from buf
extract a double at position bp from buf
extract a float at position bp from buf
extract an integer at position bp from buf
extract a long integer at position bp from buf
read a byte
read some bytes
read a character
read an integer
skip next 'n' bytes
the current input pointer