As mentioned in the comments --
Tutorials like this one, once written, are rarely if ever updated.
Java 5 (2008) and jUnit 3 (2007) are both ancient; you should be fine just using the new versions of both -- they're (mostly) backwards-compatible.
A side note: Eclipse doesn't care about the versions of the plugins its running: it comes bundled with the latest ones at the time of build, but you can install older or newer ones if you have to. Android, on the other hand, has been known to complain about some dependencies (see
IntelliJ IDEA with Junit 4.7 "!!! JUnit version 3.8 or later expected:"), but these cases are few and far between, and well-documented to boot