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Why won't the JLabels or JButtons show up when running the GUI?

I have been playing around with numerous solutions but none of them seems to work. in the constructor, there is a default initComponents() which I can not change. So I created a second method called myComponents(). The class I am using extends JFrame so I do not need to create another frame in any initializer. I created a JPanel with a vertical Boxlayout, 2 labels, 1 text field, and 1 button. I added the panel to the frame then I added all the components to the panel then packed everything.
I am unsure as to why nothing shows up besides the frame when it is run.
import javax.swing.BoxLayout;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
/**
*
* #author gpbli
*/
public class MAINFRAME extends javax.swing.JFrame {
/**
* Creates new form MAINFRAME
*/
//MAINFRAME frame = new MAINFRAME();
JPanel homescreen = new JPanel();
JLabel numOfIngredLabel = new JLabel();
JTextField numOfIngred = new JTextField();
JButton okButton = new JButton();
JLabel logo = new JLabel();
ImageIcon img = new ImageIcon("logo_resized.png");
public MAINFRAME() {
initComponents();
myComponents();
}
public void myComponents(){
BoxLayout box = new BoxLayout(homescreen,BoxLayout.Y_AXIS);
homescreen.setLayout(box);
numOfIngredLabel.setText("How many Ingredients");
numOfIngred.setText("");
okButton.setText("OK");
logo.setText(" ");
logo.setIcon(img);
add(homescreen);
homescreen.add(logo);
homescreen.add(numOfIngredLabel);
homescreen.add(numOfIngred);
homescreen.add(okButton);
numOfIngredLabel.setVisible(true);
numOfIngred.setVisible(true);
okButton.setVisible(true);
logo.setVisible(true);
pack();
revalidate();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 400, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 300, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
/**
* #param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(MAINFRAME.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(MAINFRAME.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(MAINFRAME.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(MAINFRAME.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new MAINFRAME().setVisible(true);
}
});
}
// Variables declaration - do not modify
// End of variables declaration
}

The appearance of initComponents() suggests the IDE is expecting the programmer to use the GUI builder, while the myComponents() is the programmer taking control of the GUI construction to code it by hand.
Use one or the other. I'd always use the latter, which does not require the JFrame to be extended. In fact, creating the main view of the GUI in a JPanel and adding that single component to a JFrame is the way we would typically recommend.
Note: See also the accepted answer to: Netbeans GUI editor generating its own incomprehensible code

Change JFrame(without layout) to JPanel

I have to change my program's GUI implemented in Swing. Now I have many charts in seperate windows and I want to change it so they all display in only one. The constraction of the orginal version was that
JFrame had a JPanel field. JFrame had no set layout.
private void initComponents() {// GEN-BEGIN:initComponents
getContentPane().setLayout(null);
setTitle("Wykres");
addComponentListener(new java.awt.event.ComponentAdapter() {
public void componentResized(java.awt.event.ComponentEvent evt) {
resizedWindow(evt);
}
});
addWindowListener(new java.awt.event.WindowAdapter() {
public void windowClosing(java.awt.event.WindowEvent evt) {
exitForm(evt);
}
});
java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
setBounds((screenSize.width - MIN_WIDTH) / 2, (screenSize.height - MIN_HEIGHT) / 2, MIN_WIDTH, MIN_HEIGHT);
}
JPanel was declared as follows:
BorderLayout borderLayout = new BorderLayout();
borderLayout.setHgap(0);
borderLayout.setVgap(0);
drawPanel = new JDrawPanel();
drawPanel.setLayout(borderLayout);
drawPanel.setComponentOrientation(ComponentOrientation.UNKNOWN);
setContentPane(drawPanel);
If I remove inheritance by JFrame and add inheritance by JPanel, the method paintComponent is not called. I think the reason is bad layout settings. However program calculates the distances from the edges, and I don't want to change it. How can I easily edit this program?
I also generated new GUI in NETBEANS
public class ViewPanel extends javax.swing.JFrame {
public ViewPanel() {
// initComponents();
}
public ViewPanel(JPanel histo, JPanel dystrybu, JPanel time){
initComponents(histo, dystrybu, time);
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents(JPanel histo, JPanel dystrybu, JPanel time) {
MainTabs = new javax.swing.JTabbedPane();
jHistoTab = histo;
jDystybuTab = dystrybu;
jTimeTab = time;
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("zaleznosc czasowa");
MainTabs.setToolTipText("");
MainTabs.addTab("histogram", jHistoTab);
MainTabs.addTab("dystrybuanta", jDystybuTab);
MainTabs.addTab("zalenosc czasowa", jTimeTab);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(MainTabs, javax.swing.GroupLayout.DEFAULT_SIZE, 712, Short.MAX_VALUE)
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(MainTabs, javax.swing.GroupLayout.DEFAULT_SIZE, 363, Short.MAX_VALUE)
.addContainerGap())
);
MainTabs.getAccessibleContext().setAccessibleName("");
pack();
}// </editor-fold>
/**
* #param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(ViewPanel.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(ViewPanel.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(ViewPanel.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(ViewPanel.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new ViewPanel().setVisible(true);
AppSMO.main(null);
}
});
}
public void setHistoTab(JPanel panel){
jHistoTab=panel;
}
// Variables declaration - do not modify
private javax.swing.JTabbedPane MainTabs;
private JPanel jDystybuTab;
private JPanel jHistoTab;
private JPanel jTimeTab;
// End of variables declaration
}

Set a BorderLayout to the contentpane. Add your panel to the contentPane.
That will give it center constraint so it will adapt to the size of the window.
In the panel you are then free to add any components you need. I recommend that you don't use null layout anywhere.
Avoid absolute positioning.

How to make the image scale its size automatically according to the parent JLabel's size, in Netbeans GUI Builder?

BACKGROUND:-
I am required to make a Swing GUI using Netbeans GUI Builder. The first sub-task is to display an image in the entire background.
I have followed a tutorial to get that done. I have basically made a JFrame, set its layout to GridBagLayout and then added a transparent (by unchecking the opaque property) JPanel to it. (Question 1)
After that I added a JLabel to the JFrame, Removed its text and added an image to it. (Question 2)
QUESTIONS:-
First, when I add the JPanel, it does not show its resize handles. I
Googled a bit and found this tutorial, in which it can be seen
that when they create a JPanel, it automatically shows its resize
handles, which can be dragged to resize it.
But mine doesn't (screenshot below) So is there some property or something which can
be adjusted so that I can resize it? Because my intention is to use
this transparent panels to contain components (buttons etc.) on the
background, so it should elapse the entire screen/window/JFrame
parent.
Second, since the image I am using has some 1024x768 dimensions, so
it appears to be way bigger than its parent components.
Since I am a noob and I am not sure if the size of the background
image needs to be adjusted by somehow measuring the pixel width and
pixel height of the parent and then converting the actual image's
size to that size in some program like Adobe Photoshop. But I am
sure there must a more practical way to do that.
I want the image to automatically resize itself according to the size of the parent when it is initially placed on on its parent
JLabel. How can I do that? Please tell me the easiest way,
preferably in the GUI Builder.
I also want to ensure that the image size, its parent JLabel's size, JPanel's size will all adjust to the frame when the I change the size of the window later when using this application, or if there is a way to disable the sizing of the window completely.
EDIT1 #Braj
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package com.dev_nna.dbp;
public class JFrameParent extends javax.swing.JFrame {
/**
* Creates new form JFrameParent
*/
public JFrameParent() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
getContentPane().setLayout(new java.awt.GridBagLayout());
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 0, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 0, Short.MAX_VALUE)
);
getContentPane().add(jPanel1, new java.awt.GridBagConstraints());
jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/com/dev_nna/dbp/scheduler/resources/Abstract-white-and-blue-backgrounds.jpg"))); // NOI18N
jLabel1.setText("jLabel1");
getContentPane().add(jLabel1, new java.awt.GridBagConstraints());
pack();
}// </editor-fold>
/**
* #param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(JFrameParent.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(JFrameParent.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(JFrameParent.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(JFrameParent.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new JFrameParent().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JLabel jLabel1;
private javax.swing.JPanel jPanel1;
// End of variables declaration
}

" or if there is a way to disable the sizing of the window completely."
You can set the resizable property of the frame to false. From NetBeans GUI Builder
Highlight/select the frame component from the design view, or from the navigator window.
Go to the properties window on the right and look for the property resizable and make sure it's unchecked
"I also want to ensure that the image size, its parent JLabel's size, JPanel's size will all adjust to the frame when the I change the size of the window"
One way is to paint the background onto the background panel, instead of using a label with an icon. You can see an example of that here. For the GUI Builder, the easiest way (without having to edit the auto-generated code, which I don't recommend, if you don't know what you are doing) is to use a JPanel form instead of a JFrame form. Paint on the JPanel form, then you can add that JPanel form to the JFrame form. You can see here for an easy way to add the JPanel form to the JFrame form.
See Performing Custom Painting to learn more about painting
Can also have a look at this StretchIcon that you can use with a label.
UPDATE
So your JPanel form class will ultimately look something like this
public class PanelForm extends javax.swing.JPanel {
private BufferedImage image;
public PanelForm() {
try {
image = ImageIO.read(getClass().getResource("/path/to/image/png"));
} catch (IOException ex) {
ex.printStackTrace();
}
}
#Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawImage(image, 0, 0, getWidth(), getHeight(), this);
}
#Override
public Dimension getPreferredSize() {
return new Dimension(500, 500);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable(){
public void run() {
JFrame frame = new JFrame();
frame.add(new PanelForm()); // <--- add it here
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
}

Acquiring file icon makes JPanels disappear?

So recently I've started learning some Java , I've had experience in other languages (mostly web oriented ones like PHP , HTML etc. ) . So I started with some small project to like simple launcher / desktop overlay. Based on JPanel and here it started to get problematic .
I wanted to achieve something like windows 7 task-bar with applications that I can pin onto. So I started to look around for way to look for "extracting" icon from exe file into Java. Found some topic on this site most of the answers is just URL to this site.
All of these work but the problem is , when I call for these functions (like getSystemIcon) it makes all panels above (parents ) disappear. I can get all of them back by repainting , but is there another solution to that or I'm just doing something wrong?
Code:
import java.awt.Color;
import java.awt.ComponentOrientation;
import java.awt.Dimension;
import java.awt.Graphics;
import java.io.File;
import javax.swing.Icon;
import javax.swing.JPanel;
import javax.swing.filechooser.FileSystemView;
public class Startbar extends JPanel{
private static final long serialVersionUID = 1L;
Config cfg = new Config();
public Startbar() {
setPreferredSize(new Dimension(cfg.Resx,35));
setBounds(0,1015,cfg.Resx,35);
setVisible(true);
this.setLayout(null);
StartbarClock clock = new StartbarClock();
clock.setBounds(cfg.Resx-135,0, 135, 35);
this.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
add(clock);
AddPins();
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(Color.black);
g.fillRect(0, 0, cfg.Resx, 35);
repaint();
}
public void AddPins(){
String filename = "C:/Program Files (x86)/Skype/Phone/Skype.exe";
Icon ico = FileSystemView.getFileSystemView().getSystemIcon(new File(filename));
System.out.println(ico.getIconHeight());
}
}
EDIT :
After adding timeout of 1 sec to the function everything works as it should ... wtf ?
Some code :
public class Startbar extends JPanel{
ActionListener listener = new ActionListener(){
public void actionPerformed(ActionEvent event){
pin();
}
};
Timer timer = new Timer(1000 ,listener);
private static final long serialVersionUID = 1L;
Config cfg = new Config();
public Startbar() {
setPreferredSize(new Dimension(cfg.Resx,35));
setBounds(0,1015,cfg.Resx,35);
setVisible(true);
setBackground(Color.black);
this.setLayout(null);
StartbarClock clock = new StartbarClock();
add(clock);
timer.start();
//pin();
}
public void pin(){
String filename = "C:/Program Files (x86)/Skype/Phone/Skype.exe";
FileSystemView view = FileSystemView.getFileSystemView();
Icon icon = view.getSystemIcon(new File(filename));
System.out.println(icon.getIconHeight());
timer.stop();
}
}

For what you are trying to do, set StartBar's background to black, then you don't need to overwrite paintComponet.
Don't set StartBar's bounds, use set/getPreferredSize instead. This will allow the parent container the oppurtunity to calculate the best size for the component (which might explain your problem)
You seriously should conisder the use of layout managers.
I'd have two child panels (content & task). I'd place all the application icons in the content, probably with a flow layout & the clock as/in the task, again, probably using a flow layout. Then I'd use either a grid bag layout or a border layout to add them to the task bar panel.
It might not seem like it, but ts going to make your life so much easier in the long run
UPDATE
Okay, then please explain to me why mine works then:
And look, no need to override paintComponent or repaint in sight.
public class TaskBarPane extends javax.swing.JPanel {
/**
* Creates new form TaskBarPane
*/
public TaskBarPane() {
initComponents();
setPreferredSize(new Dimension(800, 24));
pinTask(new File("C:/Program Files/BabyCounter/BabyCounter x64.exe"));
}
protected void pinTask(File task) {
pnlContent.add(new TaskPane(task));
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
pnlContent = new javax.swing.JPanel();
pnlClock = new test.ClockPane();
setBackground(new java.awt.Color(0, 0, 0));
setLayout(new java.awt.BorderLayout());
pnlContent.setOpaque(false);
java.awt.FlowLayout flowLayout1 = new java.awt.FlowLayout(java.awt.FlowLayout.LEFT);
flowLayout1.setAlignOnBaseline(true);
pnlContent.setLayout(flowLayout1);
add(pnlContent, java.awt.BorderLayout.CENTER);
pnlClock.setOpaque(false);
add(pnlClock, java.awt.BorderLayout.EAST);
}// </editor-fold>
// Variables declaration - do not modify
private test.ClockPane pnlClock;
private javax.swing.JPanel pnlContent;
// End of variables declaration
}
..
public class ClockPane extends javax.swing.JPanel {
/**
* Creates new form ClockPane
*/
public ClockPane() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
java.awt.GridBagConstraints gridBagConstraints;
jLabel1 = new javax.swing.JLabel();
setLayout(new java.awt.GridBagLayout());
jLabel1.setForeground(new java.awt.Color(255, 255, 255));
jLabel1.setText("Hello World");
gridBagConstraints = new java.awt.GridBagConstraints();
gridBagConstraints.gridx = 100;
gridBagConstraints.gridy = 0;
gridBagConstraints.anchor = java.awt.GridBagConstraints.LINE_END;
gridBagConstraints.weightx = 1.0;
gridBagConstraints.insets = new java.awt.Insets(8, 8, 8, 8);
add(jLabel1, gridBagConstraints);
}// </editor-fold>
// Variables declaration - do not modify
private javax.swing.JLabel jLabel1;
// End of variables declaration
}
..
public class TaskPane extends javax.swing.JPanel {
/**
* Creates new form TaskPane
*/
public TaskPane() {
initComponents();
}
public TaskPane(File task) {
this();
Icon ico = FileSystemView.getFileSystemView().getSystemIcon(task);
lblIcon.setIcon(ico);
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
lblIcon = new javax.swing.JLabel();
setOpaque(false);
setLayout(new java.awt.GridBagLayout());
lblIcon.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
lblIcon.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
lblIcon.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
add(lblIcon, new java.awt.GridBagConstraints());
}// </editor-fold>
// Variables declaration - do not modify
private javax.swing.JLabel lblIcon;
// End of variables declaration
}
...
public class TestFrame extends javax.swing.JFrame {
/**
* Creates new form TestFrame
*/
public TestFrame() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
pnlTaskBar = new test.TaskBarPane();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
getContentPane().add(pnlTaskBar, java.awt.BorderLayout.CENTER);
pack();
}// </editor-fold>
/**
* #param args the command line arguments
*/
public static void main(String args[]) {
/*
* Set the Nimbus look and feel
*/
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/*
* If Nimbus (introduced in Java SE 6) is not available, stay with the
* default look and feel. For details see
* http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(TestFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(TestFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(TestFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(TestFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/*
* Create and display the form
*/
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new TestFrame().setVisible(true);
}
});
}
// Variables declaration - do not modify
private test.TaskBarPane pnlTaskBar;
// End of variables declaration
}
It took me 10 mins to put together (had to feed my 11 week old daughter, sorry)

I added System.out.println("inRepaint") into your paintComponent method and ran the code...
16
inRepaint
inRepaint
inRepaint
inRepaint
inRepaint
inRepaint
inRepaint
inRepaint
inRepaint
inRepaint
inRepaint
inRepaint
inRepaint
inRepaint
...
My CPU usage ramped up to 85% before I killed it.
When I took it out, I got 4-5 as I resized the window with a cpu of around 7% before it went back to 1%
So, yeah, your code broke.

Using CardLayout in Java

I'm currently trying to make a game with a menu.
Menu looks like this.
http://puu.sh/xGoC
Ideally, when I push a button, it will bring me to the game.
The game looks like this.
http://puu.sh/xGoV
I currently initialize a JFrame() in my main class which runs either the menu class or the game class (Both of which are JPanels).
How would I go about using CardLayout to make it so that I can initialize the game menu and when I click a button, change the panel to the game panel?

I've got some sample code for you, it's not perfect, but it should work. Basically, you want to use the NEXT or PREVIOUS calls on the layout manager.
As there's only two panels, I just use the NEXT call to cycle through them. It's probably the best if you read the Swing documentation though, this works, but you might have other requirements as well.
import java.awt.CardLayout;
public class CardLayoutUsage extends javax.swing.JFrame {
public CardLayoutUsage() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
containerPanel = new javax.swing.JPanel();
menuPanel = new javax.swing.JPanel();
jButton2 = new javax.swing.JButton();
gamePanel = new javax.swing.JPanel();
jButton1 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
containerPanel.setLayout(new java.awt.CardLayout());
menuPanel.setBackground(new java.awt.Color(153, 255, 255));
jButton2.setText("Go to Game");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
javax.swing.GroupLayout menuPanelLayout = new javax.swing.GroupLayout(menuPanel);
menuPanel.setLayout(menuPanelLayout);
menuPanelLayout.setHorizontalGroup(
menuPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, menuPanelLayout.createSequentialGroup()
.addContainerGap(135, Short.MAX_VALUE)
.addComponent(jButton2)
.addGap(149, 149, 149))
);
menuPanelLayout.setVerticalGroup(
menuPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, menuPanelLayout.createSequentialGroup()
.addContainerGap(141, Short.MAX_VALUE)
.addComponent(jButton2)
.addGap(134, 134, 134))
);
containerPanel.add(menuPanel, "card2");
gamePanel.setBackground(new java.awt.Color(255, 255, 204));
jButton1.setText("Go to Menu");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
javax.swing.GroupLayout gamePanelLayout = new javax.swing.GroupLayout(gamePanel);
gamePanel.setLayout(gamePanelLayout);
gamePanelLayout.setHorizontalGroup(
gamePanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, gamePanelLayout.createSequentialGroup()
.addContainerGap(138, Short.MAX_VALUE)
.addComponent(jButton1)
.addGap(147, 147, 147))
);
gamePanelLayout.setVerticalGroup(
gamePanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, gamePanelLayout.createSequentialGroup()
.addContainerGap(152, Short.MAX_VALUE)
.addComponent(jButton1)
.addGap(123, 123, 123))
);
containerPanel.add(gamePanel, "card3");
getContentPane().add(containerPanel, java.awt.BorderLayout.CENTER);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
CardLayout cl = (CardLayout)(containerPanel.getLayout());
cl.next(containerPanel);
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
CardLayout cl = (CardLayout)(containerPanel.getLayout());
cl.next(containerPanel);
}
/**
* #param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(CardLayoutUsage.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(CardLayoutUsage.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(CardLayoutUsage.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(CardLayoutUsage.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new CardLayoutUsage().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JPanel containerPanel;
private javax.swing.JPanel gamePanel;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JPanel menuPanel;
// End of variables declaration
}

Don't use CardLayout for that.
Instead, remove the menu panel from the frame's content pane and add the game panel.
Remember to validate() the frame as well. Something like this:
public static final int VIEW_MENU = 0;
public static final int VIEW_GAME = 1;
private static Container content;
...
content = frame.getContentPane();
public static void setView(int view){
if(view == VIEW_MENU){
content.remove(menuPanel);
content.add(gamePanel);
} else {
content.remove(gamePanel);
content.add(menuPanel);
}
frame.validate();
}
In the program that I'm currently working on I have a class called ViewManager that creates static instances of each view and adds them to an array with indices that correspond to the constant fields. I also have fields to keep track of previous views for breadcrumbs / going back. It might be a case of re-inventing the wheel, but it allows you to control everything about it. And it's efficient.