java JTable监听事件没反应

如果你在监听JTable事件时没有得到任何反应，可能是因为你没有正确地添加事件监听器。

要监听JTable事件，通常有两种方法：使用TableModelListener监听TableModel事件，或使用MouseListener监听鼠标事件。下面是两种方法的示例代码：

使用TableModelListener监听TableModel事件：

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.DefaultTableModel;

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

    public JTableEventListenerExample() {
        setTitle("JTable Event Listener Example");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(400, 300);

        // 创建表格模型及表格
        model = new DefaultTableModel();
        model.addColumn("ID");
        model.addColumn("Name");
        model.addColumn("Age");
        table = new JTable(model);

        // 添加表格模型的监听器
        model.addTableModelListener(new TableModelListener() {
            @Override
            public void tableChanged(TableModelEvent e) {
                if (e.getType() == TableModelEvent.UPDATE) {
                    int row = e.getFirstRow();
                    int col = e.getColumn();
                    Object value = model.getValueAt(row, col);
                    System.out.println("Cell (" + row + ", " + col + ") changed to " + value);
                }
            }
        });

        // 添加数据到表格模型
        model.addRow(new Object[]{"1", "Alice", "18"});
        model.addRow(new Object[]{"2", "Bob", "20"});
        model.addRow(new Object[]{"3", "Charlie", "22"});
        model.addRow(new Object[]{"4", "Dave", "24"});
        model.addRow(new Object[]{"5", "Eve", "26"});

        // 添加表格到窗口
        add(new JScrollPane(table));

        setVisible(true);
    }

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

使用MouseListener监听鼠标事件：

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.MouseInputAdapter;
import java.awt.event.MouseEvent;

public class JTableMouseListenerExample extends JFrame {
    private JTable table;

    public JTableMouseListenerExample() {
        setTitle("JTable Mouse Listener Example");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(400, 300);

        // 创建表格并添加鼠标监听器
        table = new JTable(new Object[][]{
                {"1", "Alice", "18"},
                {"2", "Bob", "20"},
                {"3", "Charlie", "22"},
                {"4", "Dave", "24"},
                {"5", "Eve", "26"}
        }, new Object[]{"ID", "Name", "Age"});
        table.addMouseListener(new MouseInputAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                int row = table.rowAtPoint(e.getPoint());
                int col = table.columnAtPoint(e.getPoint());
                Object value = table.getValueAt(row, col);
                System.out.println("Cell (" + row + ", " + col + ") clicked: " + value);
            }
        });

        // 添加表格到窗口
        add(new JScrollPane(table));

        setVisible(true);
    }

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

如果你仍然无法监听到JTable事件，请检查你的代码是否正确地添加了事件监听器，并且监听器的回调方法是否正确实现。