in - A Reader object providing the underlying stream.
Must not be null.
public final int read()
Returns the next character in the filtered stream. If the desired
number of lines have already been read, the resulting stream is
effectively at an end. Otherwise, the next character from the
underlying stream is read and returned.
read in class java.io.FilterReader
the next character in the resulting stream, or -1
if the end of the resulting stream has been reached
java.io.IOException - if the underlying stream throws an IOException
public final void setLines(long lines)
Sets the number of lines to be returned in the filtered stream.
lines - the number of lines to be returned in the filtered stream
public final java.io.Reader chain(java.io.Reader rdr)
Creates a new HeadFilter using the passed in
Reader for instantiation.