sumoexeEdit = new JTextField();
final FormLayout sumoExecutableLayout = new FormLayout("100px, 200px, 70px", "25px");
sumoExecutablePanel.setLayout(sumoExecutableLayout);
final JLabel sumoexeLabel = new JLabel("Sumo Executable:");
sumoExecutablePanel.add(sumoexeLabel, cc.rc(1, 1));
sumoExecutablePanel.add(sumoexeEdit, cc.rc(1, 2));
filechooseButton = new JButton("...");
filechooseButton.addActionListener(this);
sumoExecutablePanel.add(filechooseButton, cc.rc(1, 3));
add(sumoExecutablePanel, cc.rcw(3, 1, 2, CellConstraints.FILL, CellConstraints.FILL));