获取另一个类中JComboBox的索引

// 当前类
public class MyClass {
    private JComboBox<String> comboBox;

    public MyClass() {
        // 初始化JComboBox对象
        comboBox = new JComboBox<>();
        comboBox.addItem("选项1");
        comboBox.addItem("选项2");
        comboBox.addItem("选项3");
    }

    public JComboBox<String> getComboBox() {
        return comboBox;
    }
}

// 另一个类
public class AnotherClass {
    public void getIndexFromComboBox() {
        MyClass myClass = new MyClass();
        JComboBox<String> comboBox = myClass.getComboBox();
        int selectedIndex = comboBox.getSelectedIndex();
        System.out.println("当前选中项的索引是：" + selectedIndex);
    }
}