Java Swing JTable 如何做到动态灰化
比如下面这个tabel（第一列是boolean,tabel会自动将绘制器和编辑器设置为checkbox）
我想让第一列实现动态的灰化，也就是让里面的checkbox.setEnable(false);
比如用两个按钮来控制，一个灰化按钮，一个亮化按钮
点击灰化按钮，第一列就不可编辑，点击亮化按钮，第一列变为可编辑

jTable1 = new javax.swing.JTable();

jTable1.setModel(new javax.swing.table.DefaultTableModel(
    new Object [][] {
        {null, null, null},
        {null, null, null},
        {null, null, null},
        {null, null, null}
    },
    new String [] {
        "选择", "用户名", "密码"
    }
) {
    Class[] types = new Class [] {
        java.lang.Boolean.class, java.lang.String.class, java.lang.String.class
    };

    public Class getColumnClass(int columnIndex) {
        return types [columnIndex];
    }
});

[解决办法]
全部代码，包括测试类代码如下：

package mine.test;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTable;

public class TestMain {
public static void main(String[] args){
JFrame frame=new JFrame();
frame.getContentPane().setLayout(new BorderLayout());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
MyModel model=new MyModel(5,6);
final JTable table=new JTable(model);
table.setDefaultRenderer(Boolean.class, new MyRenderer());
frame.getContentPane().add(table,BorderLayout.CENTER);

JButton buttong=new JButton("disable");
buttong.addActionListener(new ActionListener() {

@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
MyModel mode=(MyModel) table.getModel();
mode.setCheckEnable(false);
mode.fireTableDataChanged();
}
});

frame.getContentPane().add(buttong,BorderLayout.NORTH);
frame.pack();
frame.setVisible(true);
}
}

package mine.test;

import javax.swing.table.DefaultTableModel;

public class MyModel extends DefaultTableModel{
private boolean editable=true;

public MyModel(int c ,int r){
super(c,r);
}
@Override
public boolean isCellEditable(int row, int column) {
// TODO Auto-generated method stub
//假设checkbox在第一列
return column==0 ?  editable : super.isCellEditable(row, column);
}

@Override
public Class<?> getColumnClass(int columnIndex) {
// TODO Auto-generated method stub
return columnIndex==0? Boolean.class: super.getColumnClass(columnIndex);
}

public void setCheckEnable(boolean b){
this.editable=b;
}
}

package mine.test;

import java.awt.Component;

import javax.swing.JCheckBox;
import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;
import javax.swing.table.TableCellRenderer;

public class MyRenderer  extends JCheckBox implements TableCellRenderer{

    private static final Border noFocusBorder = new EmptyBorder(1, 1, 1, 1);

    public MyRenderer() {
        super();
        setHorizontalAlignment(JLabel.CENTER);
        setBorderPainted(true);
    }

    public Component getTableCellRendererComponent(JTable table, Object value,
                                                   boolean isSelected, boolean hasFocus, int row, int column) { 
 
        if (isSelected) {
            setForeground(table.getSelectionForeground());
            super.setBackground(table.getSelectionBackground());
        }
        else {
            setForeground(table.getForeground());
            setBackground(table.getBackground());
        }
        setSelected((value != null && ((Boolean)value).booleanValue()));

        if (hasFocus) {
            setBorder(UIManager.getBorder("Table.focusCellHighlightBorder"));
        } else {
            setBorder(noFocusBorder);
        }
        
        setEnabled(table.getModel().isCellEditable(row, column));

        return this;
    }

}

renderer那部分因为原来类被保护不能访问，又懒得自己写，所以大部分是考jdk的代码