java - 如何在确定的表格单元格中更改背景色

我有自定义TableCellRenderer

 
public class CustomCellRenderer extends JLabel implements TableCellRenderer {

    private TableCellRenderer defaultCellRenderer;

    public CustomCellRenderer(TableCellRenderer defaultCellRenderer) {
        this.defaultCellRenderer = defaultCellRenderer;
    }

    public Component getTableCellRendererComponent(JTable table, Object ovalue, boolean isSelected, boolean hasFocus, int row, int column) {
        String val = (String) ovalue;
        Component c = defaultCellRenderer.getTableCellRendererComponent(table, ovalue, isSelected, hasFocus, row, column);
        if (c != null) {
            if (val.equals("0h")) {
                c.setForeground(Color.RED);
            } else {
                c.setForeground(table.getForeground());
            }
            return c;
        } else return null;
    }
}
 

...

 

            TableCellRenderer renderer = new CustomCellRenderer(sumTable.getDefaultRenderer(columnModel.getColumn(i).getClass()));
            columnModel.getColumn(i).setCellRenderer(renderer);

 

and it worked normal util I need change cell Background Color it sets Color not in certain cells and in all column, all cells.

...
            if (val.equals("0h")) {
                c.setBackground(Color.GRAY);
            } else {
                c.setForeground(table.getForeground());
            }
...

我需要做什么？

最佳答案

在您的else语句中，您需要将背景设置为某种背景。例如。 ：
c.setBackground(Color.WHITE);