JMenuItem openSession = new JMenuItem(properties.getValue("openSession"));
JMenuItem closeSession = new JMenuItem(properties.getValue("closeSession"));
JMenuItem exit = new JMenuItem(properties.getValue("exit"));
exit.addActionListener(new QuitAppli());
closeSession.addActionListener(new CloseSession());
//this.sessionMenu.add(openSession);
this.sessionMenu.add(closeSession);
this.sessionMenu.add(exit);
this.sessionMenu.setMnemonic(this.sessionMenu.getText().charAt(0));