It is possible to download the jdk tarball after logging in. It seems oracle messed up their link redirection. You can use this link to download jdk 8 :[https://edelivery.oracle.com/akam/otn/java/jdk/8u261-b12/a4634525489241b9a9e1aa73d9e118e6/jdk-8u261-linux-x64.tar.gz]
You can download other jdk the same way I believe. After sign in goto download page and click download on the preferred jdk. The link will fail as of now, blame oracle. But you can check the address bar. The link will have a redirect parameter with the actual working download link. Simply remove everything from beginning upto the 'redirect=' parameter or copy and paste the redirect link and you will be able to download the jdk tar ball.
Pinned Comments
severach commented on 2019-04-17 06:47 (UTC) (edited on 2019-04-27 04:59 (UTC) by severach)
Direct downloads are no longer available. Create your Oracle account, download, and put in with the PKGBUILD.
New and improved. Now you can just download to ~/Downloads then run the update.