当我使用卡片布局按下nextButton时,我无法让我的程序切换JPanel。
这就是它的样子:
我希望程序切换到" customerSearch" JPanel的。它有卡名称和Card2的名字。 panelContainer具有卡片布局。我做错了什么?
public class Gui {
private JPanel panelContainer;
private JPanel takeoutOption;
private JPanel customerSearch;
private JButton nextButton;
private CardLayout cl = (CardLayout)panelContainer.getLayout();
public Gui() {
nextButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
cl.show(panelContainer, "Card2");
}
});
}