Adding a JAR to an Eclipse Java library

Question

How do you add a JAR file to an already existing Java library in Eclipse? Note that this is not a user library.

That is, if you look at the Java Build Path for a Ja

Answer 1

As of Helios Service Release 2, there is no longer support for JAR files.You can add them, but Eclipse will not recognize them as libraries, therefore you can only "import" but can never use.