突出显示jtable中的单元格

我使用这个类来设置JTables的样式

public class CellRenderer extends DefaultTableCellRenderer {

@Override
public Component getTableCellRendererComponent(JTable table, Object obj, boolean isSelected, boolean hasFocus, int row, int column) {
    Component cell = super.getTableCellRendererComponent(table, obj, isSelected, hasFocus, row, column);

    if (isSelected)
        cell.setBackground(Color.YELLOW);
    else if (column == 0)
        cell.setBackground(new Color(0xDDDDD));
    else 
        cell.setBackground(new Color(0xFFFFFF));

    return cell;
}

创建此类的实例,并将其应用于需要设置样式的单元格。 可以使用isSelected参数编辑单元格高亮显示颜色。

编辑

感谢您的更新示例,这里是一个切换按钮的示例,用于更改单元格渲染器

首先使用默认表格单元格渲染器为单元格创建颜色样式

public class CellHighlighterRenderer extends DefaultTableCellRenderer {

@Override
public Component getTableCellRendererComponent(JTable table, Object obj,
        boolean isSelected, boolean hasFocus, int row, int column) {

    Component cell = super.getTableCellRendererComponent(table, obj, isSelected, hasFocus, row, column);

    cell.setBackground(Color.YELLOW);

    return cell;
}

创建JFrame并添加JTable和按钮

public class Main extends JFrame {

public Main() {
    super("Table Demo");
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setPreferredSize(new Dimension(300, 300));
    setLocationRelativeTo(null);
    setLayout(new BorderLayout());

    DefaultTableModel model = new DefaultTableModel();
    model.setColumnCount(5);
    model.setRowCount(5);

    JTable table = new JTable();
    table.setModel(model);

    //Get an instance of the column and the style to apply and hold a default style instance
    final TableColumn column = table.getColumnModel().getColumn(1);
    final CellHighlighterRenderer cellRenderer = new CellHighlighterRenderer();
    final TableCellRenderer defaultRenderer = column.getCellRenderer();

    //Now in your button listener you can toggle between the styles 
    JButton button = new JButton("Click!");
    button.addActionListener(new ActionListener() {
        private boolean clicked = false;

        @Override
        public void actionPerformed(ActionEvent e) {

            if (clicked) {
                column.setCellRenderer(cellRenderer);
                clicked = false;
            } else {
                column.setCellRenderer(defaultRenderer);
                clicked = true;
            }
            repaint(); //edit
        }
    });

    getContentPane().add(table, BorderLayout.CENTER);
    getContentPane().add(button, BorderLayout.NORTH);
    pack();
    setVisible(true);
}

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

希望这有帮助

编辑 我添加了一个重新绘制来清理最后一个示例。如果只想以特定单元格为目标,请将表单元格渲染器更改为只渲染所需的单元格,如下所示

    @Override
public Component getTableCellRendererComponent(JTable table, Object obj,
        boolean isSelected, boolean hasFocus, int row, int column) {

    Component cell = super.getTableCellRendererComponent(table, obj, isSelected, hasFocus, row, column);

    //add condition for desired cell
    if (row == 1 && column == 1)
        cell.setBackground(Color.YELLOW);

    return cell;
}

有多种方法可以实现这一点,在您非常特殊的情况下,您希望突出显示特定的行和列,可以使用。。。

class CellHighlighterRenderer extends DefaultTableCellRenderer {

    private static final long serialVersionUID = 1L;

    public CellHighlighterRenderer() {
    }

    @Override
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
        super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
        if (row == 0 && column == 0) {
            setBackground(Color.YELLOW);
            setOpaque(true);
        } else {
            setBackground(table.getBackground());
            setOpaque(isSelected);
        }
        return this;
    }
}

现在,如果要突出显示整个行,可以替换

if (row == 0 && column == 0) {

具有

if (row == 0) {

渲染器更难掌握的概念之一是需要在每次迭代时完全重置组件的状态。基本上,这意味着不假设为当前迭代正确设置了属性,并确保默认值未使用。。。

看看 Using Custom Renderers 有关详细信息。。。

你可以试试这个:

首先,在表代码中:

HighlightCellRenderer renderer = new HighlightCellRenderer();
table.setDefaultRenderer(String.class, renderer);
table.setDefaultRenderer(Number.class, renderer);
table.setDefaultRenderer(Boolean.class, renderer);
table.setDefaultRenderer(Character.class, renderer);

然后:

公共类HighlightCellRenderer扩展了DefaultTableCellRenderer{

@Override
public Component getTableCellRendererComponent(JTable table, Object obj, boolean isSelected, boolean hasFocus,
        int row, int column) {
    Component cell = super.getTableCellRendererComponent(table, obj, isSelected, hasFocus, row, column);

    if (row == table.getSelectedRow()) {
        if (column == table.getSelectedColumn()) {
            // special color
            cell.setBackground(Color.GREEN);
        } else {
            // The selected row color in "com.jtattoo.plaf.aero.AeroLookAndFeel"                
            cell.setBackground(new Color(176, 196, 222)); 
        }
    } else {
        // Other rows
        cell.setBackground(Color.WHITE);
    }

    return cell;
}

}

您可以尝试一种不同的方法,而不是使用单元格渲染器,您可以像这样手动选择JTable单元格

    table.setCellSelectionEnabled(true); //Enable single cell selection

    table.addRowSelectionInterval(1, 1); // select rows
    table.setColumnSelectionInterval(1, 1); // select columns