JTable 右对齐标题 [英] JTable Right Align Header

问题描述

基本上，我有一个 JTable，其中包含带有右对齐单元格但左对齐标题的列，这看起来非常糟糕.我想在不改变标题的外观和感觉"的情况下右对齐这些列的标题.

Basically, I have a JTable containing columns with right-aligned cells but left-aligned headers which looks really bad. I would like to right-align the headers of these columns without altering the "Look and Feel" of the headers.

谢谢

推荐答案

这是修改表JTableHeader.这种用法不是绝对必要的，但它最大限度地减少了对 UI 委托外观的影响.

Here's an alternate approach to modifying the TableCellRenderer of a table's JTableHeader. It's not strictly necessary for this usage, but it minimizes the impact on the UI delegate's appearance.

典型用法:

JTable table = new JTable(…);
JTableHeader header = table.getTableHeader();
header.setDefaultRenderer(new HeaderRenderer(table));

自定义标题渲染器:

private static class HeaderRenderer implements TableCellRenderer {

    DefaultTableCellRenderer renderer;

    public HeaderRenderer(JTable table) {
        renderer = (DefaultTableCellRenderer)
            table.getTableHeader().getDefaultRenderer();
        renderer.setHorizontalAlignment(JLabel.CENTER);
    }

    @Override
    public Component getTableCellRendererComponent(
        JTable table, Object value, boolean isSelected,
        boolean hasFocus, int row, int col) {
        return renderer.getTableCellRendererComponent(
            table, value, isSelected, hasFocus, row, col);
    }
}

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