That message greeted me as I attempted to start Compuware’s DevPartner J today. So I look at my JDK 1.4 class reference. Not there. Didn’t think it was. Googled it. 2 results – both related to one FAQ from Compuware.
So apparently they wrote a class that’s required for their product, and then called it a java.lang class! Novel idea – call it com.compuware.devpartner..nmpcJackets. That way, users that see this error will realize it’s a problem with the product configuration instead of thinking that something obscure has gone heinously wrong with their JDK. Ridiculous.