java jtable 添加按钮,添加按钮到jtable

要向 JTable 添加按钮，你需要创建一个自定义的 TableCellRenderer 和 TableCellEditor，以便显示和编辑该单元格的按钮。

以下是一个简单的例子，演示如何将按钮添加到 JTable 中：

import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.AbstractCellEditor;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;

public class ButtonRendererEditorExample {

    public static void main(String[] args) {
        JFrame frame = new JFrame("JTable with Buttons");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        Object[][] data = {
            {"Button 1", new JButton("Click 1")},
            {"Button 2", new JButton("Click 2")},
            {"Button 3", new JButton("Click 3")},
            {"Button 4", new JButton("Click 4")}
        };

        String[] columnNames = {"Button Name", "Button"};

        JTable table = new JTable(data, columnNames);
        table.getColumn("Button").setCellRenderer(new ButtonRenderer());
        table.getColumn("Button").setCellEditor(new ButtonEditor(new JButton()));

        JScrollPane scrollPane = new JScrollPane(table);
        frame.add(scrollPane);

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

    static 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;
        }
    }

    static class ButtonEditor extends AbstractCellEditor implements TableCellEditor, ActionListener {

        private JButton button;

        public ButtonEditor(JButton button) {
            this.button = button;
            this.button.addActionListener(this);
        }

        public Object getCellEditorValue() {
            return button.getText();
        }

        public Component getTableCellEditorComponent(JTable table, Object value, 
                                                     boolean isSelected, int row, int column) {
            return button;
        }

        public void actionPerformed(ActionEvent e) {
            fireEditingStopped();
        }
    }
}

在此示例中，我们将一个 JTable 填充了四个带有不同标签的 JButton 对象。我们使用自定义的 ButtonRenderer 类为 JTable 中的按钮单元格提供渲染，以便它们可以正确显示。我们使用自定义的 ButtonEditor 类作为单元格编辑器，以便用户可以在单元格上单击按钮。当用户单击按钮时，我们会触发 fireEditingStopped() 方法，以便通知 JTable 编辑已完成。