将向量添加到空 JcomboBox
我正在开发一个与mysql集成的程序。
我正在查询数据库并使用向量将结果填充到 JcomboBox 中。这是在 GUI 构建完成并且工作正常时完成的。 根据第一个 JcomboBox 中选择的项目，我想填充第二个 JcomboBox。 我在第一个 JcomboBox 上使用操作侦听器，调用另一个类，传递第一个框中选定的项目，执行查询并将结果作为向量返回。
当我在第一种情况下使用向量时，我认为我可以直接调用
box2.addItem(vector2);
我的问题是，我将查询结果作为 [] 括起来的一个条目得到，
我很困惑，因为
JComboBox Box1 = new JComboBox(vector1);
可以在初始化时设置 JcomboBox，但我无法添加向量到空框可见后。
我可以使用 box2.addItem("new line etc"); 输入单行 但我想在框 1 中添加一条矢量线。
有人可以提示我我做错了什么吗？
I am working on a program that integrates with mysql.
I am querying the database and using a vector to populate a JcomboBox with the results . This is done as the GUI gets built and is working fine.
Based on the item chosen in the first JcomboBox I want to popultate the second JcomboBox.
I am using an action listener on the first JcomboBox, calling another class, passing the item selected in the first box, doing the query and returning the result as a vector.
As I used a vector in the first case I thought I could just call
box2.addItem(vector2);
My problem is that I get the result of the query as one entry enclosed by []
I am puzzled because
JComboBox Box1 = new JComboBox(vector1);
works to set up a JcomboBox at intitialisation but I cannot add a vector to an empty box after it has been made visible.
I can input single lines using box2.addItem("new line etc");
but I want to add a vector line in box 1.
Could someone give me a hint as to what I am doing wrong?
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抱歉，应该将向量结果添加到框 2 中。
结果包含大约 9 个值，但全部作为一行添加到框 2 中。
我需要生成的向量在单独的行中给出 9 个左右的值。
谢谢你们！
Sorry that should be add the vector result to box 2.
The result contains about 9 values but are all added as one line in box 2.
I need the resulting vector to give me the 9 or so values in separate lines.
Thanks guys!