java - JTabbedPane在上方和下方执行操作

我想在中间放置JTabbedPane，然后单击要更改的任何选项卡，该选项卡将同时显示在选项卡窗格的上方和下方。

我尝试了它，但是它仅在下面的面板上起作用。

如何克服这个问题？请帮我。

提前致谢。

这是我的代码：

    jTabbedPane1 = new javax.swing.JTabbedPane();
jTabbedPane1.addTab("Daily Market", jScrollPane1);
    jTabbedPane1.addTab("Weekly Market", jScrollPane2);

最佳答案

假设您要更改选项卡式窗格上方和下方的面板中的某些内容。在下面的顶部和底部面板中更改标签文本的示例代码：

import java.awt.BorderLayout;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class TestJTabbedPane extends JFrame {

    /**
     *
     */
    private static final long   serialVersionUID    = 1L;

    private void init(){
        this.setLayout(new BorderLayout());
        JPanel topPanel = new JPanel();
        final JLabel topLabel = new JLabel("North");
        topPanel.add(topLabel);
        this.add(topPanel, BorderLayout.NORTH);

        JTabbedPane tabbedPane = new JTabbedPane();
        JPanel firstTabCont = new JPanel();
        firstTabCont.add(new JLabel("First"));
        tabbedPane.addTab("First", firstTabCont);

        JPanel secondTabCont = new JPanel();
        secondTabCont.add(new JLabel("Second"));
        tabbedPane.addTab("Second", secondTabCont);

        this.add(tabbedPane, BorderLayout.CENTER);

        JPanel bottomPanel = new JPanel();
        final JLabel bottomLabel = new JLabel("South");
        bottomPanel.add(bottomLabel);
        this.add(bottomPanel, BorderLayout.SOUTH);

        tabbedPane.addChangeListener(new ChangeListener() {

            @Override
            public void stateChanged(ChangeEvent evt) {
                JTabbedPane pane = (JTabbedPane)evt.getSource();
                int selectedIndex = pane.getSelectedIndex();
                if(selectedIndex == 0){
                    topLabel.setText("");
                    topLabel.setText("Hi");

                    bottomLabel.setText("");
                    bottomLabel.setText("Bye");
                } else {
                    topLabel.setText("");
                    topLabel.setText("Bye");

                    bottomLabel.setText("");
                    bottomLabel.setText("Hi");
                }

            }
        });
        this.pack();
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setVisible(true);
    }

    public static void main(String[] args) {
        new TestJTabbedPane().init();
    }
}