Source: Balfour, Brad, CACI, “Why Ada”

From the Script: Slide 27 - Comparison of Ada and Other OOPLs

This slide presents a direct comparison of many features considered critical to object-oriented development and support for today's technology. As you can see, with the exception of Multiple Inheritance which is supported indirectly through other language features, Ada 95 directly supports all the key OO features where two of the other more popular OO languages do not.