Java JTable TableCellRenderer与ImageIcon列

问题描述

我有一个带有自定义表模型的表，该表模型有两列.列0是ImageIcon类，列1是String类.

I have a table with a custom table model which has two columns. Column 0 is an ImageIcon class, and Column 1 is a String class.

public Class<?> getColumnClass(int col) {
    if (col == 0) {
        return ImageIcon.class;
    } else {
        return String.class;
    }
}

当我定义要添加到列中的新TableCellRenderer类以便对单元格进行样式设置时，它将覆盖ImageIcon类并将其设置为String.

When I define a new TableCellRenderer class to be added to the columns so I can style the cells, it overwrites the ImageIcon class and sets it to a String.

public class CustomTableCellRenderer extends DefaultTableCellRenderer
{
    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.BLUE);
    return cell;
    }
}

关于如何解决此问题的任何想法?

Any ideas on how to fix this?

我的错误，某种程度上是隐藏的:

My mistake, it is sort of hidden:

所以问题在于，当我定义此TableCellRenderer类以对表进行样式设置时，表中的ImageIcon列将变为"File:..."之类的字符串，而不是实际的图标.

So the problem is that, when I define this TableCellRenderer class to style my table, the ImageIcon columns in my table turn to Strings like "File:..." instead of the actual icon.

推荐答案

无需创建自定义渲染器. JTable allready支持包含Icon的列的默认渲染器.您需要做的就是重写您似乎正在执行的getColumnClass()方法.

There is no need to create a custom renderer. JTable allready supports a default renderer for columns containing an Icon. All you need to do is override the getColumnClass() method, which you appear to be doing.

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