java update Jpanel component
I am using a Custome jPanel in my Gui Builder JFram Class A, the problem i am facing is to update the components (Lable) in my JPanel when I click button in JFrame.here is the button in Gui Builder JFrame ClassA: it changes the color of Jpl and also remove all the labels but not update the new labels.
private void btnShowActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
Random randomGenerator = new Random();
for (int idx = 1; idx <= 10; ++idx) {
q = randomGenerator.nextInt(100);
}
jpl1.removeAll();
new Jpl().printMe(ClassA.q);
jpl1.revalidate();
jpl1.setBackground(Color.BLUE);
jpl1.repaint();
}
here is Jpl class that is used as a custome component in GuiBuilder JFrame Class A.
public class Jpl extends JPanel {
public Jpl() {
printMe(ClassA.q);
}
public void printMe(int q) {
for (int i = 0; i <q; i++) {
System.out.println(i+"rinting lable");
String htmlLabel = "<html><font color=\"#A01070\">" + i + " New Lable </font></html>";
JLabel lbl = new JLabel(htmlLabel);
setLayout(new GridLayout(0, 1));
add(lbl, Jpl.RIGHT_ALIGNMENT);
lbl.setForeground(Color.BLUE);
Border border = BorderFactory.createLineBorder(Color.lightGray)开发者_运维百科;
lbl.setBorder(border);
lbl.add(new JSeparator(SwingConstants.HORIZONTAL));
lbl.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
JLabel label = (JLabel) e.getSource();
JOptionPane.showMessageDialog(null, "You Slected");
System.out.println(label.getText() + "NO AKKA is Selected");
}
});
}
}
You are calling printMe() on a new instance of Jpl, try that:
private void btnShowActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
Random randomGenerator = new Random();
for (int idx = 1; idx <= 10; ++idx) {
q = randomGenerator.nextInt(100);
}
jpl1.removeAll();
jpl1.printMe(ClassA.q); // HERE - REMOVED new and using jpl1 instance
jpl1.setBackground(Color.BLUE);
jpl1.revalidate();
jpl1.repaint();
}
In don't understand why you loop 10 times for your random number. Only the last result will be kept, maybe a you wanted to use q += randomGenerator.nextInt(100);. Also, ClassA.q should be replaced by q if it's the same variable.
加载中,请稍侯......
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