问题描述
目前，我正在像这样填充我的JComboBox:
currently I am filling my JComboBox like that:
countryBox = new JComboBox(countryList.toArray(new String[countryList.size()]));
但是，当使用我的程序时，countryList会发生变化，我想以不同的方式填充我的JComboBox.我尝试使用该操作来更改我的JComboBox:
However, when using my program the countryList changes and I would like to fill my JComboBox differently. I tried to use the action to change my JComboBox:
countryBox.addActionListener(new ActionListener() {
countryBox = new JComboBox(countryList.toArray(new String[countryList.size()]));
}
但是，它不会更改其值.对我来说，countryBox似乎已经预先填充了以前的数据.有什么建议我可以做什么?
However, it does not change its values. For me it seems that the countryBox is prefilled with the data from before. Any recommendations what I could do?
感谢您的回答！
推荐答案
不要创建新的JComboBox，请创建新模型
Don't create a new JComboBox, create a new model
DefaultComboBoxModel model = new DefaultComboBoxModel(countryList.toArray(new String[countryList.size()]));
countryBox.setModel(model);
您可以创建自己的ComboBoxModel，该代理可以代理您当前的List，但这取决于您.
You could create your own ComboBoxModel which could proxy you current List, but that's up to you.
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