如何获得从JComboBox中选择的项目的索引? [英] How do I get the index of the item selected from a JComboBox?

问题描述

这就是我创建JComboBox的方式-

This is how I created my JComboBox -

String[] options = {"First", "Second" , "Third"};
JComboBox optionsCombo = new JComboBox(options);

在这些项目中的一个选择，我如何得到这是选择的项目的索引?我不想要该项目被选中的项目.

When one of these items is selected, how do i get the index of the item which was selected ? I don't want the item the item that was selected.

推荐答案

使用:在 actionListener 内部:

 ActionListener actionListener = new ActionListener() {
      public void actionPerformed(ActionEvent actionEvent) {
        System.out.println("Selected: " + optionsCombo.getSelectedItem());
        System.out.println(", Position: " + optionsCombo.getSelectedIndex());
      }
    };
    optionsCombo.addActionListener(actionListener);

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