/**
* Mark the present position in the stream.
*
* @exception IOException If an I/O error occurs
*/
public void mark(int readAheadLimit) throws IOException {
ensureOpen();
if (in.markSupported()) {
in.mark(readAheadLimit);
} else {
throw new IOException(
/* #ifdef VERBOSE_EXCEPTIONS */
/// skipped "mark() not supported"
/* #endif */
);
}
}
/** Tell whether this stream supports the mark() operation. */
public boolean markSupported() {
if (in == null) {
return false;
}
return in.markSupported();
}