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White spots appear with text in JFrame

It looks like :
As seen in the image there are white spots with the text.
My code is :
import javax.swing.*;
import java.awt.*;
public class SubsFrame extends JFrame {
private String text;
private JLabel label;
private byte mode;
private static SubsFrame instance;
public static void build(long mode) throws Exception{
if(instance == null) {
instance = new SubsFrame(mode);
}else{
throw new Exception("Another instance already exists!");
}
}
public static void buildSilent(long mode) throws Exception{
if(instance == null)
instance = new SubsFrame(mode);
}
public static void showFrame(){
instance.setVisible(true);
}
public static void hideFrame(){
instance.setVisible(false);
}
public static void destroy() {
instance.dispose();
instance = null;
}
public static void setOpacity(double opacity){
instance.setBackground(new Color(1.0f,1.0f,1.0f,(float)opacity));
}
private SubsFrame(long mode) throws Exception{
if(JSubsConstants.isValidMode(mode))
this.mode = (byte)mode;
else
throw new Exception("Invalid Mode Selected!");
if(!this.isAlwaysOnTopSupported()){
throw new Exception("Always on top is not supported!");
}
label = new JLabel("Hello World! Welcome to this app!");
label.setFont(new Font("Consolas", Font.PLAIN, 25));
this.setLayout(new FlowLayout());
this.add(label);
this.setDefaultCloseOperation(HIDE_ON_CLOSE);
this.setAlwaysOnTop(true);
this.setUndecorated(true);
if(this.mode == JSubsConstants.AUTO_SIZED_FRAME_AUTO_POSITIONED){
handleFrameSize();
handleFrameLocation();
}
else if(this.mode == JSubsConstants.AUTO_SIZED_FRAME_MANUAL_POSITIONED){
handleFrameSize();
}
}
private void handleFrameLocation() {
this.setLocation(250, 350);
}
private void handleFrameSize() {
this.pack();
this.setSize(this.getWidth() + 20, this.getHeight() + 10);
}
}
Why are these coming and how can I remove them?
I guess these are to do with the font itself and not Java but I am not sure of that. I tried with some other fonts as well same results.
If you need more information please ask me.

My "suspicion" is the algorithm trying to figure out how the composition should work is having trouble with the anti aliasing of the text.
Generally when I want to do these things, I make the window completely transparent and move the logic to another container instead, this seems to do a better job, generally and eliminates the "oddities" created by the platform and how it handles transparent windows - but that's me.
import java.awt.AlphaComposite;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.JWindow;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.border.EmptyBorder;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class TranscluentWindow {
public static void main(String[] args) {
new TranscluentWindow();
}
public TranscluentWindow() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception ex) {
}
JWindow frame = new JWindow();
frame.setAlwaysOnTop(true);
frame.addMouseListener(new MouseAdapter() {
#Override
public void mouseClicked(MouseEvent e) {
if (e.getClickCount() == 2) {
SwingUtilities.getWindowAncestor(e.getComponent()).dispose();
}
}
});
frame.setBackground(new Color(0, 0, 0, 0));
frame.add(new TranslucentPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TranslucentPane extends JPanel {
private float opacity = 1;
public TranslucentPane() {
setOpaque(false);
setLayout(new BorderLayout());
JLabel label = new JLabel("Hello World! Welcome to this app!");
label.setForeground(Color.RED);
label.setBorder(new EmptyBorder(8, 8, 8, 8));
add(label);
JSlider slider = new JSlider();
slider.setMinimum(0);
slider.setMaximum(100);
slider.setValue(100);
slider.addChangeListener(new ChangeListener() {
#Override
public void stateChanged(ChangeEvent e) {
setOpacity(slider.getValue() / 100f);
}
});
add(slider, BorderLayout.SOUTH);
}
public void setOpacity(float opacity) {
this.opacity = opacity;
repaint();
}
#Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g.create();
g2d.setComposite(AlphaComposite.SrcOver.derive(opacity));
g2d.setColor(getBackground());
g2d.fillRect(0, 0, getWidth(), getHeight());
g2d.dispose();
}
}
}

Java - Creating PNG/Textlogo and drawing it to JFrame

I'm trying to print a string that the user can enter to a textbox, to a JFrame.
My problem is that the paintComponent method is never being called. Why?
PNGCreatorWindow Class:
public class PNGCreatorWindow {
private JFrame frame;
private JTextField txtText;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
PNGCreatorWindow window = new PNGCreatorWindow();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public PNGCreatorWindow() {
initialize();
}
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 678, 502);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
txtText = new JTextField();
txtText.setBounds(121, 13, 216, 22);
frame.getContentPane().add(txtText);
txtText.setColumns(10);
JButton btnGenerate = new JButton("Generate");
btnGenerate.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
btnGenerate.addMouseListener(new MouseAdapter() {
#Override
public void mouseClicked(MouseEvent arg0) {
GeneratePNGImage();
}
});
btnGenerate.setBounds(436, 6, 183, 36);
frame.getContentPane().add(btnGenerate);
JPanel panel = new JPanel();
panel.setBounds(107, 151, 338, 160);
frame.getContentPane().add(panel);
}
protected void GeneratePNGImage() {
PNGImage img = new PNGImage(txtText.getText());
frame.getContentPane().add(img);
frame.getContentPane().validate();
frame.getContentPane().setVisible(true);
frame.repaint();
}
}
PNGImage Class:
public class PNGImage extends JComponent {
private String text;
public PNGImage(String text){
this.text = text;
}
#Override
public void paintComponent(Graphics g){
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
g2.setColor(Color.red);
g2.drawString(this.text, 100,100);
g2.fillRect(50, 50, 1000, 1000);
}
}

I made a few changes to your code to get it to draw the text on the JPanel.
I put the JTextField and the JButton inside of a control panel (JPanel) and set a layout manager (FlowLayout) for the control panel. You should always use a layout manager for laying out Swing components.
I defined the image panel (PNGImage) as part of the laying out of the Swing components. First, you lay all of the Swing components out. Then, you change their state.
I removed the mouse adapter and just used an action listener on the JButton. The action listener works with the mouse.
In the PNGImage class, I added a setter, so I could pass the text to the class later, after the user typed the text in the JTextField.
I added a call to setPreferredSize so that I could set the size of the drawing canvas. I removed all other sizing, and used the pack method of JFrame to make the JFrame the appropriate size to hold the Swing components.
I added a null test to paintComponent, so that the text would only be drawn when there was some text to draw.
Here's the code. I put all the code in one module to make it easier to paste.
package com.ggl.testing;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class PNGCreatorWindow {
private JFrame frame;
private JTextField txtText;
private PNGImage imagePanel;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
new PNGCreatorWindow();
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public PNGCreatorWindow() {
initialize();
}
private void initialize() {
frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel controlPanel = new JPanel();
controlPanel.setLayout(new FlowLayout());
txtText = new JTextField(10);
controlPanel.add(txtText);
JButton btnGenerate = new JButton("Generate");
btnGenerate.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent event) {
generatePNGImage();
}
});
controlPanel.add(btnGenerate);
imagePanel = new PNGImage();
frame.getContentPane().add(controlPanel, BorderLayout.NORTH);
frame.getContentPane().add(imagePanel, BorderLayout.CENTER);
frame.pack();
frame.setVisible(true);
}
protected void generatePNGImage() {
imagePanel.setText(txtText.getText());
imagePanel.repaint();
}
public class PNGImage extends JPanel {
private static final long serialVersionUID = 602718701626241645L;
private String text;
public PNGImage() {
setPreferredSize(new Dimension(400, 300));
}
public void setText(String text) {
this.text = text;
}
#Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
if (this.text != null) {
Graphics2D g2 = (Graphics2D) g;
g2.setColor(Color.red);
g2.drawString(this.text, 100, 100);
}
}
}
}
Edited to add an action listener that saves the contents of a JPanel as a .png file:
package com.ggl.crossword.controller;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFileChooser;
import javax.swing.JPanel;
import javax.swing.filechooser.FileFilter;
import javax.swing.filechooser.FileNameExtensionFilter;
import com.ggl.crossword.view.CrosswordFrame;
public class CreateImageActionListener implements ActionListener {
private CrosswordFrame frame;
private JPanel panel;
public CreateImageActionListener(CrosswordFrame frame,
JPanel panel) {
this.frame = frame;
this.panel = panel;
}
#Override
public void actionPerformed(ActionEvent event) {
writeImage();
}
public void writeImage() {
FileFilter filter =
new FileNameExtensionFilter("PNG file", "png");
JFileChooser fc = new JFileChooser();
fc.setFileFilter(filter);
int returnValue = fc.showSaveDialog(frame.getFrame());
if (returnValue == JFileChooser.APPROVE_OPTION) {
File file = fc.getSelectedFile();
if (!file.getAbsolutePath().endsWith(".png")) {
file = new File(file.getAbsolutePath() + ".png");
}
RenderedImage image = createImage(panel);
try {
ImageIO.write(image, "png", file);
} catch (IOException e) {
e.printStackTrace();
}
}
}
private BufferedImage createImage(JPanel panel) {
int w = panel.getWidth();
int h = panel.getHeight();
BufferedImage bi = new BufferedImage(w, h,
BufferedImage.TYPE_INT_RGB);
Graphics2D g = bi.createGraphics();
panel.paint(g);
g.dispose();
return bi;
}
}

Change JButton look to custom picture

Is it possible to change the look of JButton to a custom picture? I want to use this picture as the button: http://i.stack.imgur.com/JMQMX.png instead of: http://i.stack.imgur.com/MXKUF.png
I have tried myself without succeed. Please help me! :)
Here is my code:
package launcher;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Point;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JLabel;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import java.awt.event.MouseAdapter;
public class Launcher extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
private JPanel contentPane;
static Point mouseDownCompCoords;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
mouseDownCompCoords = null;
final Launcher frame = new Launcher();
frame.setResizable(false);
frame.setUndecorated(true);
frame.setBackground(new Color(0, 255, 0, 0));
frame.setVisible(true);
frame.addMouseListener(new MouseListener() {
public void mouseReleased(MouseEvent e) {
mouseDownCompCoords = null;
}
public void mousePressed(MouseEvent e) {
mouseDownCompCoords = e.getPoint();
}
public void mouseExited(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseClicked(MouseEvent e) {
}
});
frame.addMouseMotionListener(new MouseMotionListener() {
public void mouseMoved(MouseEvent e) {
}
public void mouseDragged(MouseEvent e) {
Point currCoords = e.getLocationOnScreen();
frame.setLocation(currCoords.x - mouseDownCompCoords.x,
currCoords.y - mouseDownCompCoords.y);
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Launcher() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 841, 593);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JLabel Design = new JLabel("New label");
Design.setIcon(new ImageIcon("C:\\Users\\Daniel\\Pictures\\Launcher2.png"));
Design.setBounds(-158, -22, 1047, 592);
contentPane.add(Design);
JButton Playnow = new JButton("");
Playnow.setOpaque(false);
Playnow.setIcon(new ImageIcon("C:\\Users\\Daniel\\Pictures\\Playnow.png"));
Playnow.addMouseListener(new MouseAdapter() {
#Override
public void mouseEntered(MouseEvent e) {
//Playnow.setIcon(new ImageIcon("C:\\Users\\Daniel\\Pictures\\PlaynowHover.png"));
}
#Override
public void mouseClicked(MouseEvent e) {
//Playnow.setIcon(new ImageIcon("C:\\Users\\Daniel\\Pictures\\PlaynowHover.png"));
}
});
Playnow.setBounds(258, 442, 301, 46);
contentPane.add(Playnow);
JButton Exit = new JButton("");
Exit.addMouseListener(new MouseAdapter() {
#Override
public void mouseClicked(MouseEvent e) {
final Launcher frame = new Launcher();
frame.dispose();
System.exit(0);
}
});
Exit.setBounds(766, 60, 19, 17);
contentPane.add(Exit);
}
}
I fixed it. There was something wrong with the picture thats why I couldnt see it...

try {
Playnow.setIcon(new ImageIcon(new URL("http://i.stack.imgur.com/JMQMX.png")));
} catch (MalformedURLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
this worked for me at the moment when i tried using ur code. however, if you wanna load it locally, you should try:
Playnow.setIcon(new ImageIcon(getClass().getResource("test.png")));
and test.png is in the same directory as the class file this code is in.
hope this helps :)

(I can't write comments yet so i write it as am awnser) I am not sure if this applies here, too but when i tried to change the icon of a Jlabel in my project, i had to set it invisible and after changing the icon visible again. Maybe it works if you try it like that.

Try this:
ImageIcon ic=new ImageIcon("C:/Users/Daniel/Pictures/Playnow.png")
JButton Playnow = new JButton(ic);
Playnow.setOpaque(false);

paint method is not being called

I don't know why, but I can't call the method paint(Graphics g) from code. I have MouseListeners:
#Override
public void mouseReleased(MouseEvent e) {
pointstart = null;
}
#Override
public void mousePressed(MouseEvent e) {
pointstart = e.getPoint();
}
and MouseMotionListeners:
#Override
public void mouseMoved(MouseEvent e) {
pointend = e.getPoint();
}
#Override
public void mouseDragged(MouseEvent arg0) {
pointend = arg0.getPoint();
// ==========================================================================
// call repaint:
repaint();
// ==========================================================================
}
and my paint method:
public void paint(Graphics g){
super.paint(g); //here I have my breakpoint in debugger
g.translate(currentx, currenty);
if(pointstart!=null){
g.setClip(chartPanel.getBounds());
g.setColor(Color.BLACK);
g.drawLine(pointstart.x, pointstart.y, pointend.x, pointend.y);
}
}
in the initialize method:
currentx = chartPanel.getLocationOnScreen().x;
currenty = Math.abs(chartPanel.getLocationOnScreen().y - frame.getLocationOnScreen().y);
All in class, which is my work frame, it extends JFrame.
Problem is, that program doesn't call paint method. I checked that in debugger.
I tried do this by paintComponent , without super.paint(g).
And the best is that, that code I copied from my other project, where it works fine.
UPDATE:
This is code which I want to draw line on panel (no matter - panel/chartpanel/etc). And it doesn't paint. I tried do this by paint(Graphics g){super.paint(g) ..... } and it doesn't too. Painting should be aneble after clicking button "line".
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Point;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.BorderLayout;
import javax.swing.JButton;
import javax.swing.JToolBar;
import javax.swing.SwingConstants;
import javax.swing.JScrollPane;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
public class Window extends JFrame {
private JFrame frame;
public JPanel panelbuttons;
public JPanel panelscrollpane;
public JButton btnLine;
public JToolBar toolBar;
public JScrollPane scrollPane;
public JPanel panel;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Window window = new Window();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public Window() {
initialize();
}
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 644, 430);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
panel = new JPanel();
panelbuttons = new JPanel();
frame.getContentPane().add(panelbuttons, BorderLayout.WEST);
panelbuttons.setLayout(new BorderLayout(0, 0));
toolBar = new JToolBar();
toolBar.setOrientation(SwingConstants.VERTICAL);
panelbuttons.add(toolBar, BorderLayout.WEST);
btnLine = new JButton("line");
btnLine.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
panel.addMouseListener(mouselistenerLine);
panel.addMouseMotionListener(mousemotionlistenerLine);
}
});
toolBar.add(btnLine);
panelscrollpane = new JPanel();
frame.getContentPane().add(panelscrollpane, BorderLayout.CENTER);
panelscrollpane.setLayout(new BorderLayout(0, 0));
scrollPane = new JScrollPane(panel);
panel.setLayout(new BorderLayout(0, 0));
scrollPane.setViewportBorder(null);
panelscrollpane.add(scrollPane);
panelscrollpane.revalidate();
}
Point pointstart = null;
Point pointend = null;
private MouseListener mouselistenerLine = new MouseListener() {
#Override
public void mouseReleased(MouseEvent e) {
System.out.println("I'm in first listener. - mouse Released");
pointstart = null;
}
#Override
public void mousePressed(MouseEvent e) {
System.out.println("I'm in first listener. - mousePressed");
pointstart = e.getPoint();
}
#Override
public void mouseExited(MouseEvent e) {
}
#Override
public void mouseEntered(MouseEvent e) {
}
#Override
public void mouseClicked(MouseEvent e) {
}
};
private MouseMotionListener mousemotionlistenerLine = new MouseMotionListener() {
#Override
public void mouseMoved(MouseEvent e) {
System.out.println("I'm in second listener. - mouseMoved");
pointend = e.getPoint();
}
#Override
public void mouseDragged(MouseEvent arg0) {
System.out.println("I'm in second listener. - mouseDragged");
pointend = arg0.getPoint();
repaint();
}
};
public void paintComponent(Graphics g){
System.out.println("I'm in paintComponent method.");
if(pointstart!=null){
System.out.println("I'm drawing.");
g.setClip(scrollPane.getBounds());
g.setColor(Color.BLACK);
g.drawLine(pointstart.x, pointstart.y, pointend.x, pointend.y);
}
}
}

You are creating two separate instances of JFrame and showing only one.
One instance is created because Window class extends JFrame, and the second is created inside initialize method.
To fix this without a lot of changes in code do this:
private void initialize() {
frame = this;
frame.setBounds(100, 100, 644, 430);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
BTW. change paintComponent(Graphic g) to paint(Graphic g) because JFrame is not a JComponent.

In a ChartPanel context, consider one of the org.jfree.chart.annotations such as XYLineAnnotation, illustrated here and here.

Calling repaint() will trigger your paint(Graphics g) method to be called. So, you don't have to explicitly call paint().

Im not sure how to get the data from my text field

My text field is local to main so I cannot access it from actionPerformed, I believe I need to make it a instance variable but I'm not sure how to because my frame is also in main so I'm not sure how I would then add it to the frame.
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
import javax.swing.*;
import java.net.*;
import java.sql.*;
import java.lang.Object;
import java.awt.Graphics;
import java.awt.Graphics2D;
/**
* This class demonstrates how to load an Image from an external file
*/
public class Test extends JPanel {
int x=77, y=441, w=23, h=10;
BufferedImage img =
new BufferedImage(100, 50,
BufferedImage.TYPE_INT_ARGB);
// BufferedImage img;
public void paintComponent(Graphics g) {
g.drawImage(img, 0, 0, null);
// g.fillRect(10,10,10,10);
}
public Test() {
try {
img = ImageIO.read(new File("sales-goal.png"));
} catch (IOException e) {}
Graphics2D g = img.createGraphics();
Color myColor = Color.decode("#32004b");
g.setColor(myColor);
g.fillRect(x,y,w,h);
//77,441,23,10
}
public Dimension getPreferredSize() {
if (img == null) {
return new Dimension(100,100);
} else {
//return new Dimension(img.getWidth(null), img.getHeight(null));
return new Dimension(300,600);
}
}
public static void main(String[] args) {
JFrame f = new JFrame("Load Image Sample");
JTextField textField=new JTextField();
f.add(textField);
textField.setBounds(10,10,40,30);
textField.setVisible(true);
f.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
f.add(new Test());
f.pack();
f.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
//if (e.getSource() == textField) {}
}
}

I think that you should not set up your swing application this way. Instead of creating everything in the main method you should create a subclass of JFrame and do the initialization in its constructor (or something like that). This class can then hold references to the components it contains. Example:
public class TestFrame extends JFrame {
private JTextField textField;
public TestFrame() {
super("Load Image Sample");
textField = new JTextField();
this.add(textField);
textField.setBounds(10,10,40,30);
textField.setVisible(true);
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
this.add(new Test());
this.pack();
this.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() == textField) {
// ...
}
}
}

create your frame and initialize it inside constructor.
public static void main(String[] args) {
new Test();
}

The event handling method actionPerformed must be registered by an ActionListener interface. As both textField and Test are components of the JFrame a logical place would be the JFrame, or a separate controller class that wires everything together.
I have rewritten your code with a more conventional approach on some details. For that I introduced a new class MyFrame.
public class MyFrame extends JFrame implements ActionListener {
JTextField textField = new JTextField();
public MyFrame(String title) {
super(title); // Or constructor without parameters and:
setTitle("Load Image Sample");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//setLayout(...); for instance with null for absolute positioning
add(textField);
textField.setBounds(10, 10, 40, 30);
textField.setVisible(true);
Test panel = new Test();
add(panel);
pack();
}
public static void main(String[] args) {
JFrame f = new MyFrame("Load Image Sample");
f.setVisible(true);
}
#Override
public void actionPerformed(ActionEvent e) {
System.out.println("Text: " + textField.getText());
}
}
And then your JPanel
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JPanel;
/**
* This class demonstrates how to load an Image from an external file
*/
class Test extends JPanel {
int x = 77, y = 441, w = 23, h = 10;
BufferedImage img;
Color myColor = Color.decode("#32004b");
#Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(myColor);
g.fillRect(x, y, w, h);
g.drawImage(img, 0, 0, null);
// g.fillRect(10,10,10,10);
}
public Test() {
setBackground(Color.red);
try {
img = ImageIO.read(new File("sales-goal.png"));
} catch (IOException e) {
img = new BufferedImage(100, 50, BufferedImage.TYPE_INT_ARGB);
}
setPreferredSize(new Dimension(300, 600));
}
}