JDev 10.1.2 : Check for Updates

Question

hi
In "Getting Started With Unit-testing" (*1) dated December 2004, on page 7 I read this:
"When you have an account on OTN, you can plug JUnit easily into JDeveloper from the menu: Help -> Check for Updates -> check the JUnit Extension -> next. It will automatically download the JUnit plug-in files to your [JDeveloper home]\jdev\lib\ext directory (in Oracle JDeveloper 10.1.2 and previous versions)."
If I tried it, I got this: "No updates are available."
Did I do something wrong or are there no updates available?
thanks
Jan Vervecken
(*1) http://www.oracle.com/technology/products/jdev/collateral/papers/10g/GettingStartedWithUnitTesting.pdf
related threads I found :
- "JUnit plugin?"
JUnit plugin?
- "JDev 10.1.2 : JUnit extension"
JDev 10.1.2 : JUnit extension

Answer 1

In 10.1.2 and earlier, check for updates only tracks extensions installed by check for updates. If you install extensions manually, it doesn't know anything about them (in case you're interested, the technical reason for this is that prior to 10.1.3, we did not store sufficient version information and a unique identifier for each extension in the extension manifest, so it was impossible to identify an extension already installed in the product in lib/ext as matching an extension available on the update center.
If you do install an already installed extension via Check for Updates, it's harmless (it will just copy the extension jar back over itself and CfU will "realize" you have it installed).
Thanks,
Brian