\documentclass[a4paper]{article}
\usepackage[margin=18mm]{geometry}
\usepackage{tikz-umld}

\title{TikZ-UMLD feature examples}
\author{}
\date{}

\begin{document}
\maketitle

\section*{Classes, constraints, enumerations, and pointed notes}

\begin{center}
\begin{tikzpicture}
  \umlabstract{Shape}{}{
    \umlpvirt{area(): real} \\
    \umlquery{isEmpty(): boolean}
  }
  \umlclass[x=6]{Circle}{
    \umlcon{radius: real}{readOnly}
  }{
    \umloverrd{area(): real}
  }
  \umlenum[x=6,y=-5]{Colour}{red \\ green \\ blue}

  \umlinherit{Circle}{Shape}
  \umlnode{9,-2.5}{route}
  \umlCNdep[stereo=uses,st:pos=.55,st:anchor=south,
            st:fill=white]{Circle}{route}{Colour}
  \umlnote[x=0,y=-4,px=0,py=-1,width=12em,
           draw=green!50!black,fill=green!10]{Shape}{
    Every concrete shape supplies an area.
  }
\end{tikzpicture}
\end{center}

\section*{Static object diagram}

\begin{center}
\begin{tikzpicture}
  \begin{umlobjdiag}
    \umlobject[class=Customer]{alice}
    \umlobject[class=Order,x=6]{order}
    \umlassoc[mult1=1,mult2=*]{alice}{order}
  \end{umlobjdiag}
\end{tikzpicture}
\end{center}

\section*{Actor and assembly-connector labels}

\begin{center}
\begin{tikzpicture}
  \umlactor[head=cyan!35]{User}
  \umlbasiccomponent[x=4]{Client}
  \umlbasiccomponent[x=10]{Server}
  \umlassoc{User}{Client}
  \umlassemblyconnector[interface=Storage,labelpos=below]{Client}{Server}
\end{tikzpicture}
\end{center}

\end{document}