Disposing JFrame from JPanel

Right, I suspect this has an easy solution, or maybe I have already happened on it, but I thought I'd best ask just in case.
I have an application that creates a JFrame from another JFrame, with a JPanel internal to it. What I want to happen is for the JPanel to do its business in its paintComponent method, and then dispose of its parent JFrame (that's dispose - no System.exit(0)'s here please :) ).
The only way I can see to do it is to pass a reference to the JFrame when the JPanel is created. But this seems to be a bit messy encapsulation-wise.
Any comers?

you could make the parent JFrame have a thread that checked the status of the child JFrame's JPanel every second or so and then close itself when the JPanel is finished doing whatever it is doing.

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            P1.setLocation(P1.x, (P1.y + 26 + 87 + 5));
            P2.setLocation((P1.x + 50 + 80), P1.y);
            P3.setLocation((P1.x + 50 + 80 + 50 + 80), P1.y);
            swField.setBounds(P1.x, P1.y, 50, 26);
            sField.setBounds(P2.x, P2.y, 50, 26);
            seField.setBounds(P3.x, P3.y, 50, 26);
            // End with Frame sizing
            Dimension frameDim = new Dimension((paneInsets.left + 5 + 50 + 5 + 200 + 5 + 50 + 5 + paneInsets.right + 10), (P1.y + 26 + 5 + paneInsets.bottom + 40));
            this.setPreferredSize(frameDim);
            this.setSize(frameDim);
            //this.setSize((paneInsets.left + 5 + 50 + 5 + 200 + 5 + 50 + 5 + paneInsets.right), (P1.y + 26 + 5 + paneInsets.bottom));
        private void closeButtonActionPerformed(java.awt.event.ActionEvent evt)
            this.dispose();
        private void hdgSpinnerStateChanged(javax.swing.event.ChangeEvent evt)
            calculateAndDraw();
        private void calculateAndDraw()
            int angle = (Integer)hdgSpinner.getValue();
            int[] headings = new int[7];
            int addAngle = 45;
            for (int i = 0; i < 7; i++)
                headings[i] = angle + addAngle;
                if (headings[i] >= 360)
                    headings[i] -= 360;
                addAngle += 45;
            neField.setText(String.valueOf(headings[0]));
            eField.setText(String.valueOf(headings[1]));
            seField.setText(String.valueOf(headings[2]));
            sField.setText(String.valueOf(headings[3]));
            swField.setText(String.valueOf(headings[4]));
            wField.setText(String.valueOf(headings[5]));
            nwField.setText(String.valueOf(headings[6]));
            ccPanel.paintComponent(this.getGraphics(), angle);
            ccPanel.setBounds(ccPanelPoint.x, ccPanelPoint.y, 200, 200);
            //ccPanel.repaint(this.getGraphics(), angle);
    }The CompassCalculatorPanel.java code:
    * To change this template, choose Tools | Templates
    * and open the template in the editor.
    package com.vikingvirtual.flightsim;
    import java.awt.BasicStroke;
    import java.awt.Color;
    import java.awt.Dimension;
    import java.awt.Graphics;
    import java.awt.Graphics2D;
    import java.awt.Point;
    import java.awt.Stroke;
    * @author madViking
    public class CompassCalculatorPanel extends javax.swing.JPanel
        private int xCent;
        private int yCent;
        public CompassCalculatorPanel()
            super();
        @Override
        public void paintComponent(Graphics g)
            paintComponent(g, 0);
        public void repaint(Graphics g, int angle)
            paintComponent(g, angle);
        public void paintComponent(Graphics g, int angle)
            super.paintComponent(g);
            Dimension panelDim = this.getSize();
            xCent = (panelDim.width / 2);
            yCent = (panelDim.height / 2);
            float[] dashArray = {8.0f};
            Graphics2D g2D = (Graphics2D)g;
            g2D.setColor(new Color(53, 153, 0));
            g2D.fillRect(0, 0, panelDim.width, panelDim.height);
            BasicStroke hdgLine = new BasicStroke(3.0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER);
            BasicStroke northLine = new BasicStroke(1.0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL, 10.0f, dashArray, 0.0f);
            Stroke stdStroke = g2D.getStroke();
            // Setup Heading Arrow Points
            Point hdgBottom = new Point(xCent, panelDim.height - 15);
            Point hdgTop = new Point(xCent, 15);
            Point ltHdgArr = new Point(xCent - 10, 20);
            Point rtHdgArr = new Point(xCent + 10, 20);
            // Setup North Arrow Points
            Point nthBottom = new Point(xCent, panelDim.height - 15);
            Point nthTop = new Point(xCent, 15);
            Point ltNthArr = new Point(xCent - 8, 20);
            Point rtNthArr = new Point(xCent + 8, 20);
            // Rotate North Arrow Points
            nthBottom = rotatePoint(nthBottom, (0 - angle), true);
            nthTop = rotatePoint(nthTop, (0 - angle), true);
            ltNthArr = rotatePoint(ltNthArr, (0 - angle), true);
            rtNthArr = rotatePoint(rtNthArr, (0 - angle), true);
            // Draw Heading Line
            g2D.setColor(Color.RED);
            g2D.setStroke(hdgLine);
            g2D.drawLine(hdgBottom.x, hdgBottom.y, hdgTop.x, hdgTop.y);
            g2D.drawLine(ltHdgArr.x, ltHdgArr.y, hdgTop.x, hdgTop.y);
            g2D.drawLine(rtHdgArr.x, rtHdgArr.y, hdgTop.x, hdgTop.y);
            g2D.setStroke(stdStroke);
            // Draw North Line
            g2D.setColor(Color.WHITE);
            g2D.setStroke(northLine);
            g2D.drawLine(nthBottom.x, nthBottom.y, nthTop.x, nthTop.y);
            g2D.drawLine(ltNthArr.x, ltNthArr.y, nthTop.x, nthTop.y);
            g2D.drawLine(rtNthArr.x, rtNthArr.y, nthTop.x, nthTop.y);
            g2D.setStroke(stdStroke);
            // Draw circles
            g2D.setColor(Color.BLUE);
            g2D.setStroke(hdgLine);
            g2D.drawOval(5, 5, (panelDim.width - 10), (panelDim.height - 10));
            g2D.setStroke(stdStroke);
            g2D.fillOval((xCent - 2), (yCent - 2), 5, 5);
            g2D.setStroke(stdStroke);
        private Point rotatePoint(Point p, int angle, boolean centerRelative)
            double ix, iy;
            double hyp = 0.0;
            double degrees = 0.0;
            if (centerRelative == true)
                ix = (double)(p.x - xCent);
                iy = (double)((p.y - yCent)*-1);
            else
                ix = (double)p.x;
                iy = (double)p.y;
            if (ix == 0)
                ix = 1;
            hyp = Math.sqrt((Math.pow(ix, 2)) + (Math.pow(iy, 2)));
            if ((ix >= 0) && (iy >= 0))
                degrees = Math.toDegrees(Math.atan(ix/iy));
            else if((ix >= 0) && (iy < 0))
                degrees = Math.abs(Math.toDegrees(Math.atan(iy/ix)));
                degrees = degrees + 90.0;
            else if ((ix < 0) && (iy < 0))
                degrees = Math.toDegrees(Math.atan(ix/iy));
                degrees = degrees + 180.0;
            else if ((ix < 0) && (iy >= 0))
                degrees = Math.abs(Math.toDegrees(Math.atan(iy/ix)));
                degrees = degrees + 270.0;
            degrees = degrees + angle;
            if (degrees >= 360)
                degrees = degrees - 360;
            if (degrees < 0)
                degrees = degrees + 360;
            double interX = Math.sin(Math.toRadians(degrees));
            double interY = Math.cos(Math.toRadians(degrees));
            interX = interX * hyp;
            interY = ((interY * hyp) * -1);
            if (centerRelative == true)
                p.x = xCent + (int)Math.floor(interX);
                p.y = yCent + (int)Math.floor(interY);
            else
                p.x = (int)Math.floor(interX);
                p.y = (int)Math.floor(interY);
            return p;
    }

    In response to the first couple of comments made about using Absolute positioning (layout null), I took a look at the page on doing layouts, which happens to be the link you sent. I read about each, and decided that a GridBag layout would be best. So I created a new class called CompassCalcGridBagFrame and set it all up using the same components, but with a Grid Bag layout. I encounter the exact same problem.
    Just FYI: I originally created this frame using the NetBeans (6.9.1) Frame form builder. By default that uses the Free Design setting, which creates group layouts for both vertical and horizontal spacing. This is where the problem first came to be. I next used the builder to create an absolute positioning frame, which had the same issue. That is when I started building my frames using code only - no NetBeans GUIs. This is where the absolute layout from scratch code started. Same effect. And now, I've created a Grid Bag layout from code, and same effect. There has to be something I'm missing overall, as this effects all of my different layout designs.
    The one thing from gimbal2's previous comment is, should I be using this custom panel within another panel? I am currently adding all of the components (and in Grid Bag, the GridBag layout) to the frame pane itself. Is that OK, or should I use a generic JPanel, and have the components all within that?
    Here is the code for the newest frame class (CompassCalcGridBagFrame):
    package com.vikingvirtual.flightsim;
    import java.awt.Color;
    import java.awt.Container;
    import java.awt.Dimension;
    import java.awt.Font;
    import java.awt.GridBagConstraints;
    import java.awt.GridBagLayout;
    import java.awt.Insets;
    import java.awt.Point;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JSeparator;
    import javax.swing.JSpinner;
    import javax.swing.JTextField;
    * @author madViking
    public class CompassCalcGridBagFrame extends JFrame
        private CompassCalculatorPanel ccPanel;
        private JButton closeButton;
        private JLabel frameTitle;
        private JSeparator frameSeparator1;
        private JSpinner hdgSpinner;
        private JTextField neField;
        private JTextField eField;
        private JTextField seField;
        private JTextField sField;
        private JTextField swField;
        private JTextField wField;
        private JTextField nwField;
        private Point ccPanelPoint;
        public CompassCalcGridBagFrame()
            super ("Compass Heading Calculator");
            initComponents();
            this.pack();
            this.setVisible(true);
            calculateAndDraw();
        private void initComponents()
            this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
            Container ccPane = this.getContentPane();
            ccPane.setLayout(new GridBagLayout());
            ccPane.setBackground(Color.BLACK);
            ccPane.setForeground(Color.BLACK);
            Font buttonFont = new Font("Tahoma", 1, 12);
            Font compassFont = new Font("Digital-7", 0, 24);
            Font titleFont = new Font("Lucida Sans", 1, 14);
            frameTitle = new JLabel();
            frameTitle.setText("Compass Heading Calculator");
            frameTitle.setFont(titleFont);
            frameTitle.setHorizontalAlignment(JLabel.CENTER);
            frameTitle.setPreferredSize(new Dimension(220, 25));
            frameTitle.setForeground(Color.BLACK);
            closeButton = new JButton();
            closeButton.setText("Close");
            closeButton.setToolTipText("Click to close view");
            closeButton.setFont(buttonFont);
            closeButton.setPreferredSize(new Dimension(75, 25));
            closeButton.addActionListener(new java.awt.event.ActionListener() {public void actionPerformed(java.awt.event.ActionEvent evt)
                                                                              {closeButtonActionPerformed(evt);}});
            hdgSpinner = new JSpinner();
            hdgSpinner.setFont(compassFont);
            hdgSpinner.setModel(new javax.swing.SpinnerNumberModel(0, -1, 360, 1));
            hdgSpinner.setToolTipText("Enter heading to see angles change");
            hdgSpinner.setPreferredSize(new Dimension(50, 26));
            hdgSpinner.addChangeListener(new javax.swing.event.ChangeListener() {public void stateChanged(javax.swing.event.ChangeEvent evt)
                                                                                {hdgSpinnerStateChanged(evt);}});
            neField = new JTextField();
            neField.setBackground(Color.BLACK);
            neField.setEditable(false);
            neField.setFont(compassFont);
            neField.setForeground(Color.WHITE);
            neField.setHorizontalAlignment(JTextField.CENTER);
            neField.setPreferredSize(new Dimension(50, 26));
            neField.setBorder(null);
            eField = new JTextField();
            eField.setBackground(Color.BLACK);
            eField.setEditable(false);
            eField.setFont(compassFont);
            eField.setForeground(Color.WHITE);
            eField.setHorizontalAlignment(JTextField.CENTER);
            eField.setPreferredSize(new Dimension(50, 26));
            eField.setBorder(null);
            seField = new JTextField();
            seField.setBackground(Color.BLACK);
            seField.setEditable(false);
            seField.setFont(compassFont);
            seField.setForeground(Color.WHITE);
            seField.setHorizontalAlignment(JTextField.CENTER);
            seField.setPreferredSize(new Dimension(50, 26));
            seField.setBorder(null);
            sField = new JTextField();
            sField.setBackground(Color.BLACK);
            sField.setEditable(false);
            sField.setFont(compassFont);
            sField.setForeground(Color.WHITE);
            sField.setHorizontalAlignment(JTextField.CENTER);
            sField.setPreferredSize(new Dimension(50, 26));
            sField.setBorder(null);
            swField = new JTextField();
            swField.setBackground(Color.BLACK);
            swField.setEditable(false);
            swField.setFont(compassFont);
            swField.setForeground(Color.WHITE);
            swField.setHorizontalAlignment(JTextField.CENTER);
            swField.setPreferredSize(new Dimension(50, 26));
            swField.setBorder(null);
            wField = new JTextField();
            wField.setBackground(Color.BLACK);
            wField.setEditable(false);
            wField.setFont(compassFont);
            wField.setForeground(Color.WHITE);
            wField.setHorizontalAlignment(JTextField.CENTER);
            wField.setPreferredSize(new Dimension(50, 26));
            wField.setBorder(null);
            nwField = new JTextField();
            nwField.setBackground(Color.BLACK);
            nwField.setEditable(false);
            nwField.setFont(compassFont);
            nwField.setForeground(Color.WHITE);
            nwField.setHorizontalAlignment(JTextField.CENTER);
            nwField.setPreferredSize(new Dimension(50, 26));
            nwField.setBorder(null);
            frameSeparator1 = new JSeparator();
            frameSeparator1.setForeground(Color.WHITE);
            frameSeparator1.setBackground(Color.BLACK);
            frameSeparator1.setPreferredSize(new Dimension(320, 10));
            ccPanel = new CompassCalculatorPanel();
            ccPanel.setPreferredSize(new Dimension(250, 250));
            GridBagConstraints gbc = new GridBagConstraints();
            // Begin Component Layout
            gbc.insets = new Insets(0, 0, 0, 0);
            gbc.fill = GridBagConstraints.NONE;
            gbc.gridx = 0;
            gbc.gridy = 0;
            gbc.gridwidth = 1;
            gbc.gridheight = 1;
            gbc.weightx = 0.5;
            gbc.weighty = 0.5;
            gbc.anchor = GridBagConstraints.FIRST_LINE_START;
            ccPane.add(nwField, gbc);
            gbc.gridx = 1;
            gbc.gridy = 0;
            gbc.gridwidth = 2;
            gbc.gridheight = 1;
            gbc.weightx = 0.4;
            gbc.weighty = 0.4;
            gbc.anchor = GridBagConstraints.PAGE_START;
            ccPane.add(hdgSpinner, gbc);
            gbc.gridx = 3;
            gbc.gridy = 0;
            gbc.gridwidth = 1;
            gbc.gridheight = 1;
            gbc.weightx = 0.5;
            gbc.weighty = 0.5;
            gbc.anchor = GridBagConstraints.FIRST_LINE_END;
            ccPane.add(neField, gbc);
            gbc.gridx = 0;
            gbc.gridy = 1;
            gbc.gridwidth = 1;
            gbc.gridheight = 1;
            gbc.weightx = 0.5;
            gbc.weighty = 0.5;
            gbc.anchor = GridBagConstraints.LINE_START;
            ccPane.add(wField, gbc);
            gbc.gridx = 1;
            gbc.gridy = 1;
            gbc.gridwidth = 2;
            gbc.gridheight = 1;
            gbc.weightx = 1.0;
            gbc.weighty = 1.0;
            gbc.anchor = GridBagConstraints.CENTER;
            ccPane.add(ccPanel, gbc);
            gbc.gridx = 3;
            gbc.gridy = 1;
            gbc.gridwidth = 1;
            gbc.gridheight = 1;
            gbc.weightx = 0.5;
            gbc.weighty = 0.5;
            gbc.anchor = GridBagConstraints.LINE_END;
            ccPane.add(eField, gbc);
            gbc.gridx = 0;
            gbc.gridy = 2;
            gbc.gridwidth = 1;
            gbc.gridheight = 1;
            gbc.weightx = 0.5;
            gbc.weighty = 0.5;
            gbc.anchor = GridBagConstraints.LAST_LINE_START;
            ccPane.add(swField, gbc);
            gbc.gridx = 1;
            gbc.gridy = 2;
            gbc.gridwidth = 2;
            gbc.gridheight = 1;
            gbc.weightx = 0.5;
            gbc.weighty = 0.5;
            gbc.anchor = GridBagConstraints.PAGE_END;
            ccPane.add(sField, gbc);
            gbc.gridx = 3;
            gbc.gridy = 2;
            gbc.gridwidth = 1;
            gbc.gridheight = 1;
            gbc.weightx = 0.5;
            gbc.weighty = 0.5;
            gbc.anchor = GridBagConstraints.LAST_LINE_END;
            ccPane.add(seField, gbc);
            gbc.gridx = 0;
            gbc.gridy = 3;
            gbc.gridwidth = 4;
            gbc.gridheight = 1;
            gbc.insets = new Insets(10, 5, 10, 5);
            gbc.weightx = 0.6;
            gbc.weighty = 0.6;
            gbc.anchor = GridBagConstraints.CENTER;
            ccPane.add(frameSeparator1, gbc);
            gbc.gridx = 1;
            gbc.gridy = 4;
            gbc.gridwidth = 2;
            gbc.gridheight = 1;
            gbc.anchor = GridBagConstraints.PAGE_START;
            ccPane.add(closeButton, gbc);
        private void closeButtonActionPerformed(java.awt.event.ActionEvent evt)
            this.dispose();
        private void hdgSpinnerStateChanged(javax.swing.event.ChangeEvent evt)
            calculateAndDraw();
        private void calculateAndDraw()
            int angle = (Integer)hdgSpinner.getValue();
            if (angle == -1)
                angle = 359;
            if (angle == 360)
                angle = 0;
            int[] headings = new int[7];
            int addAngle = 45;
            for (int i = 0; i < 7; i++)
                headings[i] = angle + addAngle;
                if (headings[i] >= 360)
                    headings[i] -= 360;
                addAngle += 45;
            hdgSpinner.setValue(Integer.valueOf(angle));
            neField.setText(String.valueOf(headings[0]));
            eField.setText(String.valueOf(headings[1]));
            seField.setText(String.valueOf(headings[2]));
            sField.setText(String.valueOf(headings[3]));
            swField.setText(String.valueOf(headings[4]));
            wField.setText(String.valueOf(headings[5]));
            nwField.setText(String.valueOf(headings[6]));
            ccPanel.paintComponent(this.getGraphics(), angle);
    }

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    I have a rough idea on how to write this apps, but I would like to confirm if my idea is applicable to such application (from a performance and feasibility standpoint).
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    -     All features available in the Jpanel would be in a separate class for clarity/lisibility of my code. For instance : user settings would be a separate jpanel class; database settings is a new jpanel class
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        String databaseUserName = null;
        String databasePassword = null;
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            initComponents();
           /* starting a new instance of database configuration */
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            JMenu MenuConfiguration;
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         BarMenu.add(MenuConfiguration);
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    public class DbPanel extends javax.swing.JPanel {
        /** Creates new form DbPanel */
        public DbPanel() {
            initComponents();
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">
        private void initComponents() {
            java.awt.Button buttonClose;
            java.awt.Button buttonSave;
            java.awt.TextField dbName;
    /* � */
           gridBagConstraints.ipadx = 100;
            gridBagConstraints.insets = new java.awt.Insets(0, 21, 0, 21);
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    // </editor-fold>   
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    -     Is there any other way to remove entire a JPanel from RAM?
    -     How can I call my �external� Jpanel ? I have designed one Jpanel class for testing but I was not able to display it when I created the new instance of that class.
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    I was thinking about this but requirements are the
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