JTable 不显示列答案

【问题标题】：JTable does not show columnsJTable 不显示列
【发布时间】：2014-04-21 02:29:26
【问题描述】：

我的 JTabel 上的列出现了：/ 我也找不到为什么我的滚动条没有出现。作为新手，我无法找出原因。

这是我的代码：

 String [] columnNames = {"From", "Depature","To","Arrvial",};
     Object[][] data =  {
            {"Orlando, FL", "3/15/2014 @ 8:00 AM", "Atlanta, GA", "3/15/2014 @ 9:05 AM"},
            {"Atlanta, GA", "3/16/2014 @ 11:49 AM", "Chicago, IL", "3/16/2014 @ 1:05 PM"},
            {"Chicago, IL", "3/17/2014 @ 1:25 PM", "San Francisco, CA", "3/17/2014 @ 6:05 PM"},
            {"San Francisco, CA", "3/18/2014 @ 2:10 PM", "Seattle, WA", "3/18/2014 @ 5:35 PM"},
            {"Seattle, WA", "3/19/2014 @ 4:35 PM", "Atlanta, GA", "3/19/2014 @ 10:45 PM"},
            {"Orlando, FL", "3/15/2014 @ 8:00 AM", "Atlanta, GA", "3/15/2014 @ 9:05 AM"},
            {"Atlanta, GA", "3/16/2014 @ 11:49 AM", "Chicago, IL", "3/16/2014 @ 1:05 PM"},
            {"Chicago, IL", "3/17/2014 @ 1:25 PM", "San Francisco, CA", "3/17/2014 @ 6:05 PM"},
            {"San Francisco, CA", "3/18/2014 @ 2:10 PM", "Seattle, WA", "3/18/2014 @ 5:35 PM"},
            {"Seattle, WA", "3/19/2014 @ 4:35 PM", "Atlanta, GA", "3/19/2014 @ 10:45 PM"},
            {"Orlando, FL", "3/15/2014 @ 8:00 AM", "Atlanta, GA", "3/15/2014 @ 9:05 AM"},
            {"Atlanta, GA", "3/16/2014 @ 11:49 AM", "Chicago, IL", "3/16/2014 @ 1:05 PM"},
            {"Chicago, IL", "3/17/2014 @ 1:25 PM", "San Francisco, CA", "3/17/2014 @ 6:05 PM"},
            {"San Francisco, CA", "3/18/2014 @ 2:10 PM", "Seattle, WA", "3/18/2014 @ 5:35 PM"},
            {"Seattle, WA", "3/19/2014 @ 4:35 PM", "Atlanta, GA", "3/19/2014 @ 10:45 PM"},
            {"Orlando, FL", "3/15/2014 @ 8:00 AM", "Atlanta, GA", "3/15/2014 @ 9:05 AM"},
            {"Atlanta, GA", "3/16/2014 @ 11:49 AM", "Chicago, IL", "3/16/2014 @ 1:05 PM"},
            {"Chicago, IL", "3/17/2014 @ 1:25 PM", "San Francisco, CA", "3/17/2014 @ 6:05 PM"},
            {"San Francisco, CA", "3/18/2014 @ 2:10 PM", "Seattle, WA", "3/18/2014 @ 5:35 PM"},
            {"Seattle, WA", "3/19/2014 @ 4:35 PM", "Atlanta, GA", "3/19/2014 @ 10:45 PM"},
        };


     flightTable = new JTable(data, columnNames);
     scrollPane = new JScrollPane(flightTable);
      borderLayout = new BorderLayout();
     setLayout(borderLayout);
     add(scrollPane, BorderLayout.CENTER);
     flightTable.setFillsViewportHeight(true);
     add(flightTable, BorderLayout.CENTER);

【问题讨论】：

标签： java swing layout jtable

【解决方案1】：

一个组件只能有一个父容器。删除这个替换 scrollPane 组件的语句

add(flightTable, BorderLayout.CENTER);

【讨论】：

【解决方案2】：

您必须将 jtable 添加到滚动窗格视口。然后将 scrollPane 添加到您的面板中。

table = new JTable(columns, data);
table.setFillsViewportHeight(true);
scrollPane.setViewportView(table);
this.add(scrollPane);

【讨论】：