java在table中添加一个动态按钮

要在Java中添加一个动态按钮，首先你需要使用`JButton`类创建一个按钮对象，然后将其添加到`JTable`的每一行中。以下是一个简单的示例代码来实现这个功能：

import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class DynamicButtonInTable extends JFrame {
    private JTable table;
    private DefaultTableModel model;

    public DynamicButtonInTable() {
        setTitle("Dynamic Button in Table");
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setSize(500, 400);

        // create table model with column names
        model = new DefaultTableModel(new Object[]{"Name", "Age", "Button"}, 0);

        // create table with the above model
        table = new JTable(model);

        // create a button column renderer and editor
        TableColumn buttonColumn = table.getColumnModel().getColumn(2);
        buttonColumn.setCellRenderer(new ButtonRenderer());
        buttonColumn.setCellEditor(new ButtonEditor(new JCheckBox()));

        // add some data to the model
        model.addRow(new Object[]{"John", 25, "Click Me"});
        model.addRow(new Object[]{"Mary", 30, "Click Me"});
        model.addRow(new Object[]{"Bob", 35, "Click Me"});

        // add the table to a scroll pane and to the frame
        JScrollPane scrollPane = new JScrollPane(table);
        getContentPane().add(scrollPane);

        setVisible(true);
    }

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

    // button column renderer
    class ButtonRenderer extends JButton implements TableCellRenderer {
        public ButtonRenderer() {
            setOpaque(true);
        }

        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
            setText((value == null) ? "" : value.toString());
            return this;
        }
    }

    // button column editor
    class ButtonEditor extends DefaultCellEditor {
        protected JButton button;
        private String label;
        private boolean isPushed;

        public ButtonEditor(JCheckBox checkBox) {
            super(checkBox);
            button = new JButton();
            button.setOpaque(true);
            button.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    fireEditingStopped();
                }
            });
        }

        public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
            if (isSelected) {
                button.setForeground(table.getSelectionForeground());
                button.setBackground(table.getSelectionBackground());
            } else {
                button.setForeground(table.getForeground());
                button.setBackground(UIManager.getColor("Button.background"));
            }
            label = (value == null) ? "" : value.toString();
            button.setText(label);
            isPushed = true;
            return button;
        }

        public Object getCellEditorValue() {
            if (isPushed) {
                // perform button click action here
                JOptionPane.showMessageDialog(button, label + " button clicked");
            }
            isPushed = false;
            return label;
        }

        public boolean stopCellEditing() {
            isPushed = false;
            return super.stopCellEditing();
        }

        protected void fireEditingStopped() {
            super.fireEditingStopped();
        }
    }
}

这个例子中，我们创建了一个`JTable`并添加了一个动态按钮列。我们使用`DefaultTableModel`来存储数据和按钮的文本。我们还创建了一个`ButtonRenderer`类来渲染按钮列，并且使用了`ButtonEditor`类来编辑按钮列。在`ButtonEditor`类中，我们添加了一个`ActionListener`来处理按钮点击事件。

当你运行这个程序时，你将看到一个表格，每一行都有一个按钮列，你可以点击按钮并处理相应的事件。