\begin{tikzpicture}
\umlemptyclass{A}
\umlemptyclass[x=4,y=2]{B}
\umldep[geometry=-|]{A}{B}
\umlassoc[geometry=-|, anchor1=30, anchor2=300, name=assoc1]{A}{B}
\umlassoc[geometry=-|, anchor1=-30, anchor2=-60, name=assoc2]{A}{B}
\end{tikzpicture}