菜单项操作后如何删除JTabbedPane的内容

Question

我正在使考试软件具有表格1，表格2和表格3的列表，并且旁边是带有选项卡术语1，术语2，术语3的jtabbedpane。

String[] lists={"Form 1","Form 2","Form 3,"Form 4"};    
JList forms=new JList(lists);
JTabbedPane tabs=new JTabbedPane();
//add lists to frame
//add component to tabbedpane("term1","term 2',"term 3")
//i created acionlistener for list value changed

现在，我的jlist中的所有项目的term1,2和3都有不同的值，如何更改选项卡窗格中面板的内容？ 我努力了

tabs.removeAll();
tabs.add(term1);
tabs.validate();

但它不起作用

Answer 1

我认为，基本上，例如，您想使用JTabbedPane#add(String, Component)方法

tabs.add("Term 1", term1);

以防万一，这是我用来测试我的想法的代码...

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class TestTabbedPane100 {

    public static void main(String[] args) {
        new TestTabbedPane100();
    }

    public TestTabbedPane100() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new BorderLayout());
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TestPane extends JPanel {

        private JTabbedPane tabbedPane;
        private int index;

        public TestPane() {
            setLayout(new BorderLayout());
            tabbedPane = new JTabbedPane();
            addTabs();

            add(tabbedPane);

            JButton btn = new JButton("Update");
            add(btn, BorderLayout.SOUTH);
            btn.addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e) {
                    tabbedPane.removeAll();
                    addTabs();
                }
            });
        }

        protected void addTabs() {
            for (int count = 0; count < 10; count++, index++) {
                tabbedPane.add("Testing" + index, new JLabel("Testing" + index));
            }
        }
    }

}

Answer 2

要添加标签，请使用addTab(...)方法addTab(...) 。 要删除，请使用removeTabAt(int i) 。

阅读JTabbedPane教程

下一个示例添加一个新选项卡/删除选中的/全部删除。 我认为它可以帮助您：

public class Form extends JFrame {

    private static JTabbedPane tabs;
    private static int counter;

    public static void main(String[] args) {
        final JFrame frame = new JFrame("Game");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JButton add = new JButton("add");
        add.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent arg0) {
                JLabel l = new JLabel(++counter+"");
                tabs.addTab("New Tab "+counter, l);
            }
        });

        JButton remove = new JButton("remove");
        remove.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent arg0) {
                int selectedIndex = tabs.getSelectedIndex();
                if(selectedIndex != -1){
                    tabs.removeTabAt(selectedIndex);
                }
            }
        });

        JButton removeAll = new JButton("remove all");
        removeAll.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent arg0) {
                while (tabs.getTabCount() > 0){
                    tabs.removeTabAt(0);
                }
            }
        });

        JPanel north = new JPanel();
        north.add(add);
        north.add(remove);
        north.add(removeAll);
        frame.getContentPane().add(north,BorderLayout.NORTH);

        tabs = new JTabbedPane();
        tabs.setPreferredSize(new Dimension(200,200));
        frame.add(new JScrollPane(tabs),BorderLayout.CENTER);

        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}