我在我的Gui Builder JFram类A中使用Custome jPanel，我面临的问题是当我单击JFrame中的按钮时，更新我的JPanel中的组件(Lable)。在Gui Builder JFrame ClassA中有按钮：它更改Jpl的颜色，并删除所有标签但不更新新标签。
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();
}这里是用作GuiBuilder JFrame Class A中的custome组件的Jpl类。
public class Jpl extends JPanel {
public Jpl() {
printMe(ClassA.q);
}
public void printMe(int q) {
for (int i = 0; i
System.out.println(i+"rinting lable");
String htmlLabel = "" + i + " New Lable ";
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);
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");
}
});
}
}
