JButton and jgraphx wont show up at the same time

JButton and jgraphx wont show up at the same time

I have tried several ways, but still havent found the solution. I have a
jgraph in a frame and I want to add a Jbutton in that frame also in a
specific location. However I only get one of them when i run the program,
because they expand to the whole window. Any ideas how to fix this?
Thanks in advance.
public class GUIquery extends JFrame {
JFrame frame ;
static JGraph jgraph ;
final mxGraph graph = new mxGraph() ;
final mxGraphComponent graphComponent = new mxGraphComponent(graph);
public GUIquery() {
super("Test");
GraphD() ;
imgbtn();
}
public void GraphD() {
Object parent = graph.getDefaultParent();
graph.getModel().beginUpdate();
try
{ ..... }
finally
{
graph.getModel().endUpdate();
}
getContentPane().add(graphComponent);
public void imgbtn() {
JPanel jpanel = new JPanel() ;
jpanel.setSize(100, 100) ;
jpanel.setLocation(1200,60) ;
JButton imgbtn = new JButton("Export as Image") ;
imgbtn.setSize(100, 100) ;
imgbtn.setLocation(1200,60) ;
jpanel.add(imgbtn);
add(jpanel);
}
}
public static void main(String[] args)
{
GUIquery frame = new GUIquery();
frame.setLayout(null);
frame.pack();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(400, 320);
frame.setVisible(true);
}
}