给jtable设置单选框

可以使用JRadioButton来实现对JTable的单选功能。可以在JTable中的某一列中添加JRadioButton，然后处理它的选中状态即可实现单选效果。具体实现可以结合使用TableCellRenderer和TableCellEditor，来渲染和编辑该列的每个单元格。

相关问题

给jtable设置单选框的代码和注释

以下是Java Swing中给JTable设置单选框的代码和注释：

import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumnModel;
import java.awt.*;

public class JTableRadioButton extends JFrame {
    private JTable table;

    public JTableRadioButton() {
        setTitle("JTable Radio Button Example");

        // 创建表数据
        Object[][] data = {
                {new Boolean(false), "John Doe", "1-555-555-5555"},
                {new Boolean(false), "Mary Jane", "1-555-555-1234"},
                {new Boolean(false), "Bob Smith", "1-555-555-9876"},
                {new Boolean(false), "Jane Doe", "1-555-555-5555"}
        };

        // 创建表头
        String[] columnNames = {"Selected", "Name", "Phone Number"};

        // 创建表模型，并设置数据和表头
        DefaultTableModel model = new DefaultTableModel(data, columnNames);

        // 创建表并设置模型
        table = new JTable(model);

        // 获取表格控制器
        TableColumnModel columnModel = table.getColumnModel();

        // 获取单选框列，并将它的宽度设置为100像素
        int radioButtonColumnIndex = 0;
        columnModel.getColumn(radioButtonColumnIndex).setPreferredWidth(100);

        // 设置单选框渲染器和编辑器
        columnModel.getColumn(radioButtonColumnIndex).setCellRenderer(new RadioButtonRenderer());
        columnModel.getColumn(radioButtonColumnIndex).setCellEditor(new RadioButtonEditor(new JCheckBox()));

        // 将表格添加到窗口中
        add(new JScrollPane(table));

        // 设置窗口大小并可见
        setSize(400, 200);
        setVisible(true);
    }

    // 单选框渲染器
    class RadioButtonRenderer implements TableCellRenderer {
        private JRadioButton radioButton = new JRadioButton();

        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
            if (value != null) {
                radioButton.setSelected(((Boolean) value).booleanValue());
            } else {
                radioButton.setSelected(false);
            }
            return radioButton;
        }
    }

    // 单选框编辑器
    class RadioButtonEditor extends DefaultCellEditor implements ItemListener {
        private JRadioButton radioButton;

        public RadioButtonEditor(JCheckBox checkBox) {
            super(checkBox);
            radioButton = new JRadioButton();
            radioButton.addItemListener(this);
        }

        public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
            if (value != null) {
                radioButton.setSelected(((Boolean) value).booleanValue());
            } else {
                radioButton.setSelected(false);
            }
            return radioButton;
        }

        public Object getCellEditorValue() {
            return Boolean.valueOf(radioButton.isSelected());
        }

        public void itemStateChanged(ItemEvent e) {
            super.fireEditingStopped();
        }
    }

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

注释中解释了代码中每个部分所做的事情。建议您看懂代码后再使用它，这样才能更好地理解它是如何实现的。

如何给jtable添加单选框

您好，可以使用JRadioButton作为单选框，然后将其添加到JTable的表格中，具体实现可以通过继承AbstractTableModel，重写getColumnClass方法，将对应列的Class设置为JRadioButton即可。具体代码实现如下：

import javax.swing.*;
import javax.swing.table.AbstractTableModel;

public class MyTableModel extends AbstractTableModel {
    
    private Object[][] rowData = {
            {"1", "option1"},
            {"2", "option2"},
            {"3", "option3"},
    };
    private String[] columnNames = {"ID", "Options"};
    private JRadioButton[][] radioButtons = new JRadioButton[rowData.length][1];
    
    @Override
    public int getRowCount() {
        return rowData.length;
    }
    
    @Override
    public int getColumnCount() {
        return columnNames.length;
    }
    
    @Override
    public Object getValueAt(int rowIndex, int columnIndex) {
        if (columnIndex == 0) {
            return rowData[rowIndex][columnIndex];
        } else {
            JRadioButton radioButton = radioButtons[rowIndex][columnIndex - 1];
            if (radioButton == null) {
                radioButton = new JRadioButton();
                radioButtons[rowIndex][columnIndex - 1] = radioButton;
            }
            return radioButton;
        }
    }
    
    @Override
    public String getColumnName(int column) {
        return columnNames[column];
    }
    
    @Override
    public Class<?> getColumnClass(int columnIndex) {
        if (columnIndex == 0) {
            return Integer.class;
        } else {
            return JRadioButton.class;
        }
    }
    
    public static void main(String[] args) {
        JFrame frame = new JFrame("JTable with JRadioButton");
        frame.setSize(400, 300);
        
        JTable table = new JTable(new MyTableModel());
        JScrollPane scrollPane = new JScrollPane(table);
        frame.add(scrollPane);
        
        frame.setVisible(true);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}