如何更改JTable（JAVA）中特定单元格的颜色？

我的问题是如何在Java中更改JTable中特定单元格的颜色？据我所知，我应该做的第一件事是重写CellRendered方法，我已经按照如下方式完成了这一部分：

public class CustomTableCellRenderer extends DefaultTableCellRenderer 
{
    int amount;
    int f,c;

    public CustomTableCellRenderer(int a)
    {

        amount = a;


    }
    public CustomTableCellRenderer()
    {




    }
@Override
public Component getTableCellRendererComponent
   (JTable table, Object value, boolean isSelected,
   boolean hasFocus, int row, int column) 
   {
    Component cell = super.getTableCellRendererComponent
    (table, value, isSelected, hasFocus, row, column);
    if(amount == 3)
    {

            cell.setBackground(Color.LIGHT_GRAY);

    }
    if(amount == 1)
    {

        cell.setBackground(Color.cyan);

    }
    if(amount == 2)
    {

        cell.setBackground(Color.orange);

    }


    return cell;
 }

 Cache_table.getColumnModel().getColumn(columna).setCellRenderer(new    CustomTableCellRenderer(1));

}

当我想改变单元格的颜色时，我改变了颜色，但它改变了整个列，我使用覆盖的代码部分如下所示：

public class CustomTableCellRenderer extends DefaultTableCellRenderer 
{
    int amount;
    int f,c;

    public CustomTableCellRenderer(int a)
    {

        amount = a;


    }
    public CustomTableCellRenderer()
    {




    }
@Override
public Component getTableCellRendererComponent
   (JTable table, Object value, boolean isSelected,
   boolean hasFocus, int row, int column) 
   {
    Component cell = super.getTableCellRendererComponent
    (table, value, isSelected, hasFocus, row, column);
    if(amount == 3)
    {

            cell.setBackground(Color.LIGHT_GRAY);

    }
    if(amount == 1)
    {

        cell.setBackground(Color.cyan);

    }
    if(amount == 2)
    {

        cell.setBackground(Color.orange);

    }


    return cell;
 }

 Cache_table.getColumnModel().getColumn(columna).setCellRenderer(new    CustomTableCellRenderer(1));

如何指定要更改颜色的单元格的确切位置，指定行数和列数：

例如：

新的CustomTableCellRenderer（int行、int列）

可能吗

---

谢谢大家

考虑使用

else if

语句，然后在default last else块中添加默认值

另外，这是键，不要在渲染器的构造函数中设置数量——这不会起作用。相反，您必须在

gettableCellRenderComponent

方法内获得amount结果，通常来自单元格的值，或者来自同一行上另一个模型单元格的值

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

    Component cell = super.getTableCellRendererCo

    // check that we're in the right column
    if (column != correctColumn) { 
        // if not the right column, don't change cell
        return cell;       
    }

    // SomeType is the type of object held in the correct column
    SomeType someType = (SomeType) value;

    if (value == null) {
        value = "";
        return cell;       
    }

    // and hopefully it has a method for getting the amount of interest
    int amount = someType.getAmount();

    if(amount == 3) {
            cell.setBackground(Color.LIGHT_GRAY);
    } else if(amount == 1) {
        cell.setBackground(Color.cyan);
    } else if(amount == 2) {
        cell.setBackground(Color.orange);
    } else {
        cell.setBackground(null); // or a default background color
    }

此外，您可能需要确保您的单元格是不透明的