[java]drawArc

import java.awt.Graphics;
import java.awt.GridLayout;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JSpinner;
import javax.swing.SpinnerNumberModel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class TestArc
{
    public static void main(String[] args)
    { 
        // Frame 1
        
        final JSpinner startAngle = new JSpinner(new SpinnerNumberModel(0, -360, +360, 5));
        final JSpinner arcAngle = new JSpinner(new SpinnerNumberModel(0, -360, +360, 5));
        
        final JFrame frame1 = new JFrame();
        frame1.setLayout(new GridLayout(2,2));
        frame1.add(new JLabel("startAngle"));
        frame1.add(startAngle);
        frame1.add(new JLabel("arcAngle"));
        frame1.add(arcAngle);
        frame1.pack();
        frame1.setLocationRelativeTo(null);
        frame1.setVisible(true);
        frame1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        // Frame 2
        
        final JFrame frame2 = new JFrame()
        {
            @Override
            public void paint(Graphics g)
            {
                super.paint(g);
                int border = 40;
                g.drawRect(border,border,getWidth()-2*border,getHeight()-2*border);
                g.fillArc(border,border,getWidth()-2*border,getHeight()-2*border,(int) startAngle.getValue(),(int) arcAngle.getValue());
            }
        };
        frame2.setBounds(frame1.getX()+frame1.getWidth(),frame1.getY(),200,200);
        frame2.setVisible(true);
        frame2.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        // Events
        
        ChangeListener listener = new ChangeListener()
        {
            public void stateChanged(ChangeEvent e)
            {
                frame2.repaint();
            }
        };
        
        startAngle.addChangeListener(listener);
        arcAngle.addChangeListener(listener);
    }
}

Cannot cast from Object to int

	at TestArc.main(TestArc.java:40)