i am new to java swing, and i am using now NetBeant for building the GUI using the drag and drop designer built in NetBeans. the problem i am facing now is, i have the below posted code and it was written in Eclipse, and as you see
I have a class that extends JPanel and I am adding an image captured from the WEB_CAM to that JPanel.now since i switched to NetBeans, I created the JFrame, JPanel, JButtons using the designer, and in the code i am writing in NetBeans, i do not
know how to add the captured image to the JPanel.
in eclipse I created the below posted code in another class, but in NetBeans every thing is generated automatically and i have to do the same work i did in eclipse. i do not know how to add an image to JPanel in NetBeans.
JPanel inEclipse
class FacePanel extends JPanel {
private BufferedImage image;
int count = 0;
public FacePanel() {
super();
}
public void setFace (BufferedImage img) {
this.image = img;
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
if (this.image == null) {
System.out.println("image is null");
return;
}
g.drawImage(this.image, 10, 10, this.image.getWidth(), this.image.getHeight(), null);
g.setFont(new Font("arial", 2, 20));
g.setColor(Color.WHITE);
g.drawString("processing frame by frame [ frame: " + ( count++) + " ]", 150, 150);
}
}
Code in NetBeans
private void initComponents() {
jpanel1_Preview = new javax.swing.JPanel();
btn_Play = new javax.swing.JButton();
btn_Pause = new javax.swing.JButton();
btn_Capture = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jpanel1_Preview.setBorder(javax.swing.BorderFactory.createTitledBorder("Cam_Preview"));
javax.swing.GroupLayout jpanel1_PreviewLayout = new javax.swing.GroupLayout(jpanel1_Preview);
jpanel1_Preview.setLayout(jpanel1_PreviewLayout);
jpanel1_PreviewLayout.setHorizontalGroup(
jpanel1_PreviewLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 0, Short.MAX_VALUE)
);
jpanel1_PreviewLayout.setVerticalGroup(
jpanel1_PreviewLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 225, Short.MAX_VALUE)
);
btn_Play.setText("play");
btn_Play.setSelected(true);
btn_Pause.setText("pause");
btn_Pause.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btn_PauseActionPerformed(evt);
}
});
btn_Capture.setText("capture");
btn_Capture.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btn_CaptureActionPerformed(evt);
}
});
Answer
- Change
class FacePanel extends JPanel {
topublic class FacePanel extends JPanel {
, otherwise Netbeans won't be able to create an instance of it. - Do a "Clean and build"
- Drag the
FacePanel
class from the Project explorer onto your form...
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