Don't install QuickTime 6.4 if you need QuickTime Java support under OS X 10.2 According to an Apple Knowledge Base article, QuickTime 6.4 does not include QuickTime Java support; installing it on ...

If you run into problems installing Java on Windows 7 or Windows 8, try installing Java as an administrator. To do so, download the offline installer and save it to an empty folder on your hard disk.

If Java is not working in Windows 11/10, these solutions may help you troubleshoot the issue. Although, due to the lack of NPAPI support, Java applets stopped working in Microsoft Edge, Google ...

Problems with Oracle's Java 7 runtime may require OS X users to switch back to Java 6, but currently there is no direct means of doing so.