Disappearing panel border

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Date: 29 Jul 2004 23:22:39 -0700

Hi All,
The following program has 3 panels centrally located on which are
drawn lines . However in MyPanelA the outline of the frame is missing,
while in the other MyPanelB and MyPanelC the outline is clearly shown.

I need to restore the outline of the frame in MyPanelA.

Help is appreciated.

Bob H

//package hellowordusingdesigner;

import javax.swing.UIManager;
import java.awt.*;

public class HelloWorld {
  boolean packFrame = false;

  //Construct the application
  public HelloWorld() {
    HelloWorldFrame frame = new HelloWorldFrame();
    //Validate frames that have preset sizes
    //Pack frames that have useful preferred size info, e.g. from
their layout
    if (packFrame) {
      frame.pack();
    }
    else {
      frame.validate();
    }
    //Center the window
    Dimension screenSize =
Toolkit.getDefaultToolkit().getScreenSize();
    Dimension frameSize = frame.getSize();
    if (frameSize.height > screenSize.height) {
      frameSize.height = screenSize.height;
    }
    if (frameSize.width > screenSize.width) {
      frameSize.width = screenSize.width;
    }
    frame.setLocation((screenSize.width - frameSize.width) / 2,
(screenSize.height - frameSize.height) / 2);
    frame.setVisible(true);
  }
  //Main method
  public static void main(String[] args) {
    try {
      UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
    }
    catch(Exception e) {
      e.printStackTrace();
    }
    new HelloWorld();
  }
}

//package hellowordusingdesigner;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

public class HelloWorldFrame
  extends JFrame {
  JPanel jpnlDisplay;
  BorderLayout borderLayout1 = new BorderLayout();
  JPanel jPanel1 = new JPanel();
  JLabel jlblTitle = new JLabel();
  JLabel jlblHelloWorld = new JLabel();
  JButton jbtnSayHello = new JButton();
  JButton jbtnExit = new JButton();
  
  private TitledBorder titledBorder1;
  private BorderLayout borderLayout2 = new BorderLayout();
  //private JPanel jPnlOnTop = new JPanel();
  //private JPanel jPnlMiddle = new JPanel();
  //private JPanel jPnlBack = new JPanel();
  private GridLayout gridLayout1 = new GridLayout();
  private MyPanelA jPnlMiddle = new MyPanelA();
  private MyPanelB jPnlOnTop = new MyPanelB();
  private MyPanelC jPnlBack = new MyPanelC();
  
  
  //Construct the frame
  public HelloWorldFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }
  
  //Component initialization
  private void jbInit() throws Exception {
    jpnlDisplay = (JPanel)this.getContentPane();
    titledBorder1 = new TitledBorder("");
    jpnlDisplay.setLayout(borderLayout1);
    this.setSize(new Dimension(400, 300));
    this.setTitle("HeloWld");
    jPanel1.setLayout(null);
    jlblTitle.setFont(new java.awt.Font("SansSerif", 1, 16));
    jlblTitle.setForeground(Color.blue);
    jlblTitle.setAlignmentY( (float) 0.5);
    jlblTitle.setText("My First Java Application");
    jlblTitle.setBounds(new Rectangle(113, 25, 235, 18));
    jlblHelloWorld.setFont(new java.awt.Font("SansSerif", 0, 24));
    jlblHelloWorld.setForeground(Color.red);
    jlblHelloWorld.setText("Hello World from Java");
    jlblHelloWorld.setBounds(new Rectangle(93, 148, 250, 18));
    jbtnSayHello.setBounds(new Rectangle(71, 234, 130, 27));
    jbtnSayHello.setText("Say Hello Java");
    jbtnSayHello.addActionListener(new
                                    
HelloWorldFrame_jbtnSayHello_actionAdapter(this));
    jbtnExit.setBounds(new Rectangle(220, 234, 130, 27));
    jlblHelloWorld.setVisible(false);
    jbtnExit.setText("Exit");
    jbtnExit.addActionListener(new
HelloWorldFrame_jbtnExit_actionAdapter(this));
    jPnlMiddle.setBorder(BorderFactory.createEtchedBorder());
    jPnlMiddle.setBounds(new Rectangle(12, 63, 152, 47));
    jPnlMiddle.setLayout(borderLayout2);
    jPnlOnTop.setBorder(BorderFactory.createLoweredBevelBorder());
    jPnlOnTop.setPreferredSize(new Dimension(100, 100));
    jPnlOnTop.setBounds(new Rectangle(87, 90, 100, 43));
    jPnlBack.setBorder(BorderFactory.createRaisedBevelBorder());
    jPnlBack.setBounds(new Rectangle(138, 56, 113, 68));
    jPnlBack.setLayout(gridLayout1);
    jpnlDisplay.add(jPanel1, BorderLayout.CENTER);
    jPanel1.add(jPnlOnTop, null);
    jPanel1.add(jPnlMiddle, null);
    jPanel1.add(jbtnSayHello, null);
    jPanel1.add(jbtnExit, null);
    jPanel1.add(jlblHelloWorld, null);
    jPanel1.add(jlblTitle, null);
    jPanel1.add(jPnlBack, null);
    
  }
  
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }
  
  void jbtnExit_actionPerformed(ActionEvent e) {
    System.exit(0);
  }
  
  void jbtnSayHello_actionPerformed(ActionEvent e) {
    if (jlblHelloWorld.isVisible() == false) {
      jlblHelloWorld.setVisible(true);
      
    }
  }
}

class HelloWorldFrame_jbtnExit_actionAdapter
  implements java.awt.event.ActionListener {
  HelloWorldFrame adaptee;
  
  HelloWorldFrame_jbtnExit_actionAdapter(HelloWorldFrame adaptee) {
    this.adaptee = adaptee;
  }
  
  public void actionPerformed(ActionEvent e) {
    adaptee.jbtnExit_actionPerformed(e);
  }
}

class HelloWorldFrame_jbtnSayHello_actionAdapter
  implements java.awt.event.ActionListener {
  HelloWorldFrame adaptee;
  
  HelloWorldFrame_jbtnSayHello_actionAdapter(HelloWorldFrame adaptee)
{
    this.adaptee = adaptee;
  }
  
  public void actionPerformed(ActionEvent e) {
    adaptee.jbtnSayHello_actionPerformed(e);
  }
}

import javax.swing.*;
import java.awt.*;
/**
 *
 * @author zzynx
 */
public class MyPanelA extends JPanel {
   /** Creates a new instance of MyPanel */
  public MyPanelA() {
  }
   public void paint(Graphics g) {
    super.paintComponent(g);
    // a hexagon
    // since it is a circular motion here calling an extra (6 + 1) to
close up the figure
    int HexaPts = 7;
    int HexaPtsX[] = new int[HexaPts];
    int HexaPtsY[] = new int[HexaPts];
    g.setColor(Color.magenta);
    int rad = 15; // radius of circle containing hexagon
    int x1, y1;
    for (int i = 0; i < HexaPts; i++) {
      x1 = (int) (rad * Math.cos((2 * Math.PI / 6)*(0.5+i)));
      y1 = (int) (rad * Math.sin((2 * Math.PI / 6)*(0.5+i)));
      HexaPtsX[i]=x1;
      HexaPtsY[i]=y1;
    }
    int a = 24;// horizontal position on this row.
    int id = 24;
    for (int ib = 1; ib < 3; ib++) {
      for (int ic = 0; ic < HexaPts - 1; ic++) { // six sides
        g.drawLine(0+a*ib + HexaPtsX[ic], 0+1*id + HexaPtsY[ic],
                   0+a*ib + HexaPtsX[ic + 1], 0+1*id + HexaPtsY[ic +
1]);
      }
    }
  }
}

/*
 // import javax.swing.*;
 // import java.awt.*;
/**
 *
 * @author zzynx
 */
//public class MyPanelA extends JPanel {
    /** Creates a new instance of MyPanel */
  // public MyPanelA() {
  // }
  // public void paintComponent(Graphics g) {
  // super.paintComponent(g);
  // g.setColor(Color.green);
   // g.drawLine(5,5,30,5);
  // }
//}

import javax.swing.*;
import java.awt.*;
/**
 *
 * @author zzynx
 */
public class MyPanelB extends JPanel {
    /** Creates a new instance of MyPanel */
    public MyPanelB() {
    }
    public void paintComponent(Graphics g) {
         super.paintComponent(g);
         g.setColor(Color.green);
         g.drawLine(5,5,30,5);
    }
}

import javax.swing.*;
import java.awt.*;
/**
 *
 * @author zzynx
 */
public class MyPanelC extends JPanel {
    /** Creates a new instance of MyPanel */
    public MyPanelC() {
    }
    public void paintComponent(Graphics g) {
         super.paintComponent(g);
         g.setColor(Color.blue);
         g.drawLine(5,5,30,5);
    }
}

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