JTable不会显示列标题 [英] JTable won't show column headers

问题描述

我有以下代码来实例化一个JTable：该表提供了正确数量的行和列，但是列顶部没有标题的迹象。

I have the following code to instantiate a JTable: the table comes up with the right number of rows and columns, but there is no sign of the titles atop the columns.

public Panel1()
{
    int  nmbrRows;

    setLayout(null);
    setBackground(Color.magenta);
    Vector colHdrs;

    //create column headers

    colHdrs = new Vector(10);
    colHdrs.addElement(new String("Ticker"));

    // more statements like the above to establish all col. titles       

    nmbrRows = 25;
    DefaultTableModel tblModel = new DefaultTableModel(nmbrRows, colHdrs.size());
    tblModel.setColumnIdentifiers(colHdrs);

    scrTbl = new JTable(tblModel);
    scrTbl.setBounds(25, 50, 950, 600);
    scrTbl.setBackground(Color.gray);
    scrTbl.setRowHeight(23);    
    add(scrTbl);

//rest of constructor
...

}

将此与其他制表代码相比较，我没有看到任何遗漏的步骤，但必须缺少某些内容。

Comparing this to other table-making code, I don't see any missing steps, but something must be absent.

推荐答案

将 JTable 放在 JScrollPane 中。试试这个：

add(new JScrollPane(scrTbl));

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