JTable行背景颜色不改变为双或整数

Question

我正在使用以下代码更改JTable中一行的背景色。对于所有具有字符串值的单元格，行的颜色都会更改，但是对于具有整数值或双数值的单元格，行的颜色不会更改。

  private JTable getNewRenderedTable(final JTable table) {
        table.setDefaultRenderer(Object.class, new DefaultTableCellRenderer() {
            @Override
            public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int col) {
                Component c = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, col);
                String status = (String)table.getModel().getValueAt(row, index);
                if (Constants.seller.equals(status)) {
                    c.setBackground(Color.GRAY);
                    //setForeground(Color.WHITE);
                } else {
                    c.setBackground(table.getBackground());
                    c.setForeground(table.getForeground());
                }       
                return c;
            }   
        });
        return table;
    }

Answer 1

尝试为Integer和Double注册相同的渲染器。这些类在默认情况下注册了单独的默认呈现程序。像这样的。

private JTable getNewRenderedTable(final JTable table) {
    table.setDefaultRenderer(Object.class, new DefaultTableCellRenderer() {
        @Override
        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int col) {
            Component c = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, col);
            String status = (String)table.getModel().getValueAt(row, index);
            if (Constants.seller.equals(status)) {
                c.setBackground(Color.GRAY);
                //setForeground(Color.WHITE);
            } else {
                c.setBackground(table.getBackground());
                c.setForeground(table.getForeground());
            }       
            return c;
        }   
    });
    table.setDefaultRenderer(Number.class, table.getDefaultRenderer(Object.class));
    table.setDefaultRenderer(Double.class, table.getDefaultRenderer(Object.class));
    return table;
}