JTable标头不显示 [英] JTable header not showing

问题描述

即使将其添加到JScrollPane这样的容器中，我的JTable标头也不会显示...告诉我它为什么会发生，以及如何解决或调试它. jtable，我做到了，但我的标题仍然没有显示.

My JTable header wont show even if add it into a container like JScrollPane...tell me why is it happen and how can i fix it or debug it.. I search through internet and all they saying is add container to your jtable, i did but still my header are not showing.

public void table(){

try{

        rs = stat.executeQuery("SELECT * FROM payments;");

        Vector<String> header = new Vector<String>();

        header.add("PAYMENT"); 
        header.add("AMOUNT");
        header.add("MODIFIER");
        header.add("DATE MODIFIED");

        Vector<Vector<Object>> data = new  Vector<Vector<Object>>();

        while(rs.next()) {

            Vector<Object> row = new Vector<Object>();

            row.add(rs.getString("description"));
            row.add(rs.getString("amount")); 
            row.add(rs.getString("remarks")); 
            row.add(rs.getString("date"));


            data.add(row);

        } // loop

        table = new JTable(data, header);

        JScrollPane scrollPane = new JScrollPane(table);

        panel.add(table);
        panel.add(table.getTableHeader());
        //panel.removeAll();
        //scroll.add(table);
        validate();

    }catch(Exception e){
        System.out.println("Error in table: "+e);
    }//try and catch

}

推荐答案

从删除开始

panel.add(table.getTableHeader());

JTable用于将其标头添加到JScrollPane.组件的一个实例只能属于一个父/容器，上面的行将其从滚动窗格中删除

The JTable is designed to add it's header to the JScrollPane. An instance of a component can only belong to a one parent/container, the above line is removing it from the scrollpane

还要更改此...

panel.add(table);

收件人

panel.add(scrollPane);

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