将JTable动态添加到JScrollPane [英] Dynamically adding JTable to JScrollPane

问题描述

我有一个要在用户提示时填充的表.问题是，我无法预计该表最终将具有多少行.在将要显示表格的面板的构造函数中，我有

I have a table that I want to populate when the user prompts me to do so. Problem is, I can't anticipate how many rows the table will end up having. In the constructor for my panel where the table will be displayed I have

    // add empty scrollPane to JPanel which will later hold table
              scrollPane = new JScrollPane(); 
    add(scrollPane);

此类包含一个方法，当我要最终显示表时将调用该方法

This class contains a method that will be called when I want to finally display the table

    public void displayTable(String[] columnNames, String[][] dataValues)
{
    table = new JTable(dataValues, columnNames);
    table.setPreferredScrollableViewportSize(new Dimension(300, 80)); 
    table.setFillsViewportHeight(true); 
    scrollPane.add(table);

    this.setVisible(true);
    scrollPane.repaint();

}

问题是，该表永远不会显示.我只是看到一个ScrollPane所在的轮廓，里面没有表格.为什么表格没有显示，我该如何解决?

Problem is, the table never displays. I just see an outline of where the ScrollPane is with no table inside. Why isn't the table displaying and how can I fix it?

推荐答案

您不应将组件添加到JScrollPane，而应添加到其JViewport:

You should add component not to JScrollPane but to its JViewport:

scrollPane.getViewport ().add (table);

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