My JFrame for my program opens up extremely small, I have looked at a couple similar problems and fixes but none have worked so far...
I am completely stumped with this, usually when I use the jframes it never does this, have I forgotten something simple?
/*
* 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 pkgfinal.project;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
/**
*
* #author conor
*/
public class SolBoard extends javax.swing.JFrame {
private final int[][] laysout = {
{0,0,1,1,1,0,0},
{0,0,1,1,1,0,0},
{1,1,1,1,1,1,1},
{1,1,1,1,1,1,1},
{1,1,1,1,1,1,1},
{0,0,1,1,1,0,0},
{0,0,1,1,1,0,0,}
};
private final javax.swing.JButton[][] Board = new javax.swing.JButton[7][7];
public SolBoard() {
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() {
for(int i=0;i<7;i++) {
for(int j=0;j<7;j++){
if(laysout[i][j]==1) {
Board[i][j] = new javax.swing.JButton();
Board[i][j].setText(i + "," + j);
Board[i][j].setBounds(j*60 + 10, i*60 + 10, 50, 50 );
Board[i][j].addActionListener((ActionEvent e) -> {
javax.swing.JButton button = (javax.swing.JButton) e.getSource();
System.out.println(button.getActionCommand());
});
getContentPane().add(Board[i][j]);
}
}
}
getContentPane().add(new javax.swing.JButton("v.1.0"));
}
/**
* #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 | InstantiationException | IllegalAccessException | javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Board.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(() -> {
new SolBoard().setVisible(true);
});
}
}
It should open to the size of the board (array of buttons)
Try this put this code in your initComponents():
this.setVisible(true);
this.getContentPane().setSize(400, 400);
Or this:
this.setPreferredSize(new Dimension(400, 300));
this.pack();
this.setLocationRelativeTo(null);
this.setVisible(true);
I think that the order matters in this case
In initComponents() method write:
setSize(400, 400);
setVisible(true);//call at the end of initiComponents method
then adjust size to your liking. You may also use setPreferredSize, setMinimumSize, setMaximumSize methods or setExtendedState to get full screen window.
Example of full screen mode:
setExtendedState(JFrame.MAXIMIZED_BOTH);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
setUndecorated(true);
Related
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
I have the following problem in a project of mine, took me a while to figure out whats causing the problem, and I can reproduce it with this simple code which I attached.
I am dynamically adding content to a JTextPane with a HTMLEditorKit. I set autoscroll to off because I want to control it manually (when user scrolled up, to stop, and when an event is triggered to get activated again).
The problem now is, when I set the value of the JScrollBar to it's maximum value, it's a different one, just the moment, after having content inserted to the HTMLDocument. When I trigger the setValue again a second time manually, it scrolls to the correct maximum value.
It seems the JScrollBar is not aware about the correct maximumValue just right after adding to the HTMLDocument, and just a (delayed) time later.
Using
caret.setUpdatePolicy(DefaultCaret.ALWAYS_UPDATE);
is not a solution, because it also doesn't work properly. It doesn't scroll to the maximum value too, leaving a view pixel below, which I don't want.
Here is the full code reproducing the issue. If you click on the right button (add & scroll), it inserts a DIV element to the body. The moment the last visible line is reached, it doesn't scroll correctly to the last maximum value, the last line is hidden. But when you just click on the left button manually to trigger a second scrollToEnd(), it scrolls correctly to the maximum value.
Code:
/*
* 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 javaapplication26;
import java.io.IOException;
import java.math.BigInteger;
import java.security.SecureRandom;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultCaret;
import javax.swing.text.Element;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
public class NewJFrame extends javax.swing.JFrame {
/**
* Creates new form NewJFrame
*/
public NewJFrame() {
initComponents();
this.setSize(500, 200);
this.setLocationRelativeTo(null);
this.jTextPane1.setEditorKit(new HTMLEditorKit());
this.jTextPane1.setContentType("text/html");
this.jTextPane1.setText("<html><body><div id=\"GLOBALDIV\"></div></body></html>");
this.jScrollPane1.setHorizontalScrollBarPolicy(javax.swing.ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
this.jScrollPane1.setVerticalScrollBarPolicy(javax.swing.ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED);
DefaultCaret caret = (DefaultCaret) this.jTextPane1.getCaret();
caret.setUpdatePolicy(DefaultCaret.NEVER_UPDATE);
this.jScrollPane1.setAutoscrolls(false);
this.jTextPane1.setAutoscrolls(false);
}
private void scrollToEnd() {
this.jScrollPane1.getVerticalScrollBar().setValue(this.jScrollPane1.getVerticalScrollBar().getMaximum());
//this.jTextPane1.setCaretPosition(this.jTextPane1.getDocument().getLength());
}
/**
* 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();
jScrollPane1 = new javax.swing.JScrollPane();
jTextPane1 = new javax.swing.JTextPane();
jPanel2 = new javax.swing.JPanel();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jPanel1.setLayout(new java.awt.BorderLayout());
jScrollPane1.setViewportView(jTextPane1);
jPanel1.add(jScrollPane1, java.awt.BorderLayout.CENTER);
getContentPane().add(jPanel1, java.awt.BorderLayout.CENTER);
jButton1.setText("Scroll to end");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jPanel2.add(jButton1);
jButton2.setText("Add & scroll");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jPanel2.add(jButton2);
getContentPane().add(jPanel2, java.awt.BorderLayout.PAGE_END);
pack();
}// </editor-fold>
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
try {
HTMLDocument doc = (HTMLDocument) this.jTextPane1.getDocument();
HTMLEditorKit editorKit = (HTMLEditorKit) this.jTextPane1.getEditorKit();
SecureRandom random = new SecureRandom();
String htmlCode = "<div style=\"background-color: #FFFF22; height: 12px; font-size: 12;\">"+new BigInteger(64, random).toString(64)+"</div>";
//editorKit.insertHTML(doc, doc.getLength(), htmlCode, 0, 0, null);
Element element = doc.getElement("GLOBALDIV");
if (element != null) {
doc.insertBeforeEnd(element, htmlCode);
}
this.scrollToEnd();
} catch (BadLocationException ex) {
Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE, null, ex);
}
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
this.scrollToEnd();
}
/**
* #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(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NewJFrame.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 NewJFrame().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextPane jTextPane1;
// End of variables declaration
}
This code replacement works though, but leaves a small gap, also not properly scrolling to the maximum value:
this.jTextPane1.setCaretPosition(0);
this.jTextPane1.setCaretPosition(this.jTextPane1.getDocument().getLength());
When you insert the div into the document, the document model is being updated immediately. However, the JTextPane only receives a notification that it is invalid and needs to be laid out. This notification creates an event on the EDT which is only processed after the current event (triggered by the button clicked) has finished.
Thus, at the moment when you invoke scrollToEnd(), the revalidation of the JTextPane is still pending, and the height of the text pane is still too small.
In order to get the sequence of events right, you need to schedule the invokation of scrollToEnd() in the EDT, by using invokeLater:
SwingUtilities.invokeLater(new Runnable(){
public void run(){
scrollToEnd();
}
});
Is there a way to create Netbeans Matisse Vertical Flow Layout like :
But Netbeans Matisse Flow Layout create like this :
FlowLayout will automatically "wrap" components whose width extends past the boundary of the container they're in. So, to accomplish what I think you're trying to accomplish, all you need to do is set the FlowLayout like you've done, and resize the JTextFields to the appropriate width.
Note: "what I think" was a pointed criticism of the fact that your question doesn't really help us know exactly what you're trying to accomplish.
Five JTextFields:
Notice if you resize one, it will "wrap" the others:
You can select and resize multiple components simultaneously:
I changed the widths to 250:
Viola:
Code:
public class NewJFrame2 extends javax.swing.JFrame {
/**
* Creates new form NewJFrame2
*/
public NewJFrame2() {
initComponents();
setSize(287,200);
}
/**
* 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() {
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
jTextField4 = new javax.swing.JTextField();
jTextField5 = new javax.swing.JTextField();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
getContentPane().setLayout(new java.awt.FlowLayout());
jTextField1.setText("jTextField1");
jTextField1.setPreferredSize(new java.awt.Dimension(250, 20));
getContentPane().add(jTextField1);
jTextField2.setText("jTextField2");
jTextField2.setPreferredSize(new java.awt.Dimension(250, 20));
getContentPane().add(jTextField2);
jTextField3.setText("jTextField3");
jTextField3.setPreferredSize(new java.awt.Dimension(250, 20));
getContentPane().add(jTextField3);
jTextField4.setText("jTextField4");
jTextField4.setPreferredSize(new java.awt.Dimension(250, 20));
getContentPane().add(jTextField4);
jTextField5.setText("jTextField5");
jTextField5.setPreferredSize(new java.awt.Dimension(250, 20));
getContentPane().add(jTextField5);
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(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NewJFrame2.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 NewJFrame2().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
private javax.swing.JTextField jTextField4;
private javax.swing.JTextField jTextField5;
// End of variables declaration
}
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.
I have two almost similar code.
Code I
JFrame pFrame=new NetBeansFrame();
JPanel myPanel=new myPanel();
pFrame.add(myPanel);
Dimension windowDim=myPanel.getSize();
pFrame.pack();
pFrame.getContentPane().setSize(windowDim.width-100,windowDim.height-50);
pFrame.setVisible(true);
Code II
JFrame pFrame=new JFrame();
JPanel myPanel=new myPanel();
pFrame.add(myPanel);
Dimension windowDim=myPanel.getSize();
pFrame.pack();
pFrame.getContentPane().setSize(windowDim.width-100,windowDim.height-50);
pFrame.setVisible(true);
In Code I,NetBeansFrame is a frame that I created using netbeans->Jframe and named it NetBeansFrame.It contains nothing.I added the panel into it using codeI.
NetBeansFrame.java
public class NetBeansFrame extends javax.swing.JFrame {
public NetBeansFrame() {
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() {
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, 407, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 429, 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(NetBeansFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NetBeansFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NetBeansFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NetBeansFrame.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 NetBeansFrame().setVisible(true);
}
});
}
// Variables declaration - do not modify
// End of variables declaration
}
In Code II,I am creating a frame from JFrame.Logically both the codes are equivalent.
But on executing Code I,the panel does not appear in netbeansFrame while for Code II the panel appears.
So,I want to know that what may be the cause for this unusual behavior for almost same code.
Dimension windowDim=myPanel.getSize(); returned only Dimension[0, 0], becasue returned Dimension from
already visible container (in your case with components JPanel)
after called pack();
then pFrame.getContentPane().setSize(windowDim.width-100,windowDim.height-50); returned Dimension[-100, -50]
you can
if JPanel is empty then returns its PreferredSize
if JPanel is not empty, then its JComponents returns PreferredSize you can to try that with to remove/disable code line pFrame.getContentPane().setSize(windowDim.width-100,windowDim.height-50);