This tutorial is based on my upcoming book comparing Eiffel, Java and C++. While the object models of these languages are very similar, they are very different in the ease with which software can be built.We will examine the differences between the languages, their strengths and weaknesses in a hard-headed look. The superficial syntactic differences will be looked at, but more importantly, the semantic differences and philosophical basis of each language.We will see how these differences apply in actually developing software, as it is not just a question of theoretical niceness, but practical application, and what this means in terms of ensuring quality in software.