There are no 64-bit versions of the Java Plugin, Java Web Start or Java Control Panel; however the 32-bit versions of the JRE can be installed on 64-bit systems in order to obtain this functionality.

IBM plans to make 64-bit Java technology available on its AIX 5L Unix operating system in early July, a move that it claims puts AIX ahead of Sun's Solaris and Hewlett-Packard's HP-UX operating ...

Oracle said it was working on a version of Java Standard Edition for the 64-bit ARM architecture, though it didn’t give a time frame.