小编Log*_*ker的帖子

我有一个主框架,我想用卡片布局在中心位置显示我的NewUser类的对象.这是我的主要课程

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;



public class CardLayoutDemo implements ItemListener {
JPanel cards; //a panel that uses CardLayout
final static String BUTTONPANEL = "Card with JButtons";
final static String TEXTPANEL = "Card with JTextField";

public void addComponentToPane(Container pane) {
    //Put the JComboBox in a JPanel to get a nicer look.
    JPanel comboBoxPane = new JPanel(); //use FlowLayout
    String comboBoxItems[] = { BUTTONPANEL, TEXTPANEL };
    JComboBox cb = new JComboBox(comboBoxItems);
    cb.setEditable(false);
    cb.addItemListener(this);
    comboBoxPane.add(cb);

    //Create the "cards".
    NewUser newUser = …