如何使用Array或ArrayList中的值加载JComboBox？

Question

我需要将以下数组放入JComboBox，然后在单击“提交”按钮时存储所选值。

    listOfDepartments = new String[5];
    listOfDepartments[0] = "Mens Clothing";
    listOfDepartments[1] = "Womens Clothing";
    listOfDepartments[2] = "Childrens Clothing";
    listOfDepartments[3] = "Electronics";
    listOfDepartments[4] = "Toys";

    //Department: ComboBox that loads from array

    // Store values
    JButton buttonSubmit = new JButton();
    buttonSubmit.setText("Submit");
    container.add(buttonSubmit);

     buttonSubmit.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent evt) {
        //store value from combobox in a variable
        }
    });

Answer 1

首先，创建一个模型......

DefaultComboBoxModel model = new DefaultComboBoxModel(listOfDepartments);
comboBox.setModel(model);

其次，在引发actionPerformed事件时获取所选值...

String value = (String)comboBox.getSelectedItem();

请查看How to Use Combo Boxes了解详情。