如何让 JTable 水平扩展到 JPanel 中的视口之外

Question

我在具有 46 列的 JPanel 中有一个 JTable。问题是您无法读取列的 headers ，更不用说任何后续行了。我无法轻松找到一种方法将 table 扩展到视口之外，这将允许水平滚动条。这是我用来设置 table 及其视口的代码。

private void setupReferencePanel() {
    refTable = new JTable(null, makeHeaderVector());
    refTable.addMouseListener(new TableListener(presenter));
    refListingPanel = new JPanel();
    refListingPanel.setLayout(new BorderLayout());
    refListingPanel.setBorder(BorderFactory.createTitledBorder("Reference File"));
    refScroller = new JScrollPane(refTable);
    refScroller.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
    refTable.setFillsViewportHeight(true);
    //refTable.setFillsViewportWidth(true);
    refListingPanel.add(refScroller, BorderLayout.CENTER);
    refCountLbl = new JLabel("item count: 0");
    refSelect = new SelectionPanel("Selection");
    refListingPanel.add(refSelect, BorderLayout.PAGE_START);
    refListingPanel.add(refCountLbl, BorderLayout.PAGE_END);
    refTable.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
    getContentPane().add(refListingPanel);
}

private Vector makeHeaderVector() {
    String[] cols = { ... }; // hidden array of string contents
    Vector<String> results = new Vector<String>(Arrays.asList(cols));
    return results;
}

Answer 1

我应该设置

refTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF)

而不是

refTable.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);

稍后在文档中，常量 AUTO_RESIZE_OFF 定义为 'Do not adjust column widths automatically; use a horizontal scrollbar instead.'

如何让 JTable 水平扩展到 JPanel 中的视口之外

How do you get JTable to extend horizontally beyond the viewport in a JPanel

java

swing

jtable