如何在条形图中的多个条形图上添加标签？

Question

我有一个带有多个条形图的简单图形。如何在每个栏上放置一些文本（最好带有JLabel）？以下是绘制图表的代码：

public void paintComponent(Graphics g) {
    super.paintComponent(g);
    if (values == null || values.length == 0)
        return;
    double minValue = 0;
    double maxValue = 10000;
    for (int i = 0; i < values.length; i++) {
        if (minValue > values[i])
            minValue = values[i];
        if (maxValue < values[i])
            maxValue = values[i];
    }

    Dimension d = getSize();
    int clientWidth = d.width;
    int clientHeight = d.height;
    int barWidth = clientWidth / values.length;

    Font titleFont = new Font("SansSerif", Font.BOLD, 20);
    FontMetrics titleFontMetrics = g.getFontMetrics(titleFont);
    Font labelFont = new Font("SansSerif", Font.PLAIN, 10);
    FontMetrics labelFontMetrics = g.getFontMetrics(labelFont);

    int titleWidth = titleFontMetrics.stringWidth(title);
    int y = titleFontMetrics.getAscent();
    int x = (clientWidth - titleWidth) / 2;
    g.setFont(titleFont);
    g.drawString(title, x, y);

    int top = titleFontMetrics.getHeight();
    int bottom = labelFontMetrics.getHeight();
    if (maxValue == minValue)
        return;
    double scale = (clientHeight - top - bottom) / (maxValue - minValue);
    y = clientHeight - labelFontMetrics.getDescent();
    g.setFont(labelFont);

    for (int i = 0; i < values.length; i++) {
        int valueX = i * barWidth + 1;
        int valueY = top;
        int height = (int) (values[i] * scale);
        if (values[i] >= 0)
            valueY += (int) ((maxValue - values[i]) * scale);
        else {
            valueY += (int) (maxValue * scale);
            height = -height;
        }

        g.setColor(Color.red);
        g.fillRect(valueX, valueY, barWidth - 2, height);
        g.setColor(Color.black);
        JLabel testLabel = new JLabel("Test");
        g.drawRect(valueX, valueY, barWidth - 2, height);
        int labelWidth = labelFontMetrics.stringWidth(names[i]);
        x = i * barWidth + (barWidth - labelWidth) / 2;

        g.drawString(names[i], x, y);
    }

}

我认为应该在for循环中，但这不起作用。 提前谢谢！