Re: please confirm something (jdbc)

// read
conn.setAutoCommit(true);
pstmt = conn.prepareStatement("select content from test where id = ? for
update";
pstmt.setString(1, "12345");
ResultSet rs = pstmt.executeQuery();
if (rs.next()) {
InputStream is = rs.getBinaryStream("content");
int n;
byte[] tmp = new byte[is.available()]; // available() returns 0!
FileOutputStream fos = new FileOutputStream("C:/Temp/12345.pdf");
while ((n = is.read(tmp)) != -1) {
 fos.write(tmp, 0, n);
}
fos.close();
is.close();
}
rs.close();
pstmt.close();
conn.close();

The problem is that "available()" method returns 0 and "read()" method
blocks. What am I doing wrong?