swing java更新Jpanel组件
我在我的Gui Builder JFram Class a中使用的是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（标签）。以下是Gui Builder JFrame ClassA中的按钮：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();
}
下面是一个Jpl类，它在GUI Builder JFrame类a中用作自定义组件
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);
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");
}
});
}
}
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