There’s no particular need to install the very latest Java, version 8 Update 74. According to Oracle, “Java SE 8u74 is a patch-set update, including all of 8u73 plus additional features (described in the release notes).” The release notes don’t shed much light on the differences between 8u73 and 8u74, but they don’t appear to be of any importance for regular users.

In other words, if you’re already running Java 8 Update 73, you’re fine.