Inscription des listeners
setLabelMethod=laClasseBouton.getMethod("setLabel", new Class[]{String.class});
setLabelMethod.invoke(bout,new String[]{"10"});
setTextMethod=laClasseAfficheur.getMethod("setText", new Class[]{String.class});
setTextMethod.invoke(aff,new String[]{"0"});
addActionListenerMethod=laClasseBouton.getMethod("addActionListener",
new Class[]{java.awt.event.ActionListener.class});
addActionListenerMethod.invoke(bout,new java.awt.event.ActionListener[]{compt});
addPropertyChangeListenerMethod=laClasseCompteur.getMethod("addPropertyChangeListener",
new Class[]{java.beans.PropertyChangeListener.class});
addPropertyChangeListenerMethod.invoke(compt,newjava.beans.PropertyChangeListener[]{aff});