APACIC++, a parton cascade in C++

The newly developped Monte-Carlo event generator APACIC++ suitable to descr ibe multijet-events in high-energetic electron-positron annihilations is pr esented. A new ansatz to match the corresponding matrix elements for the pr oduction of jets via the strong and electroweak interactions to the subsequ ent parton shower modelling the inner-jet evolution is discussed in some de tail. Results obtained with APACIC++ are compared to other QCD event genera tors and to some representative experimental data.