java - JComboBox 将起始索引设置为 "1"

Question

是否有一种简单的方法可以将 JComboBox 的起始索引设置为“1”或“2”？如果您启动应用程序，索引通常设置为“0”，但我想从索引“1”开始。

编辑:

JComboBox variableBox_1 = new JComboBox();
for (int i = 0; i < dataModel.getVariableNames().size(); i++) {
    variableBox_1.addItem(dataModel.getVariableNames().get(i));
}
JPanel comBoxPanel1 = new JPanel(new BorderLayout());
JLabel comBoxLabel1 = new JLabel("X:");
comBoxPanel1.add(variableBox_1, BorderLayout.CENTER);
comBoxPanel1.add(comBoxLabel1, BorderLayout.WEST);
optionPanel.add(comBoxPanel1);
variableBox_1.addActionListener((ActionEvent e) -> {
    sp.setVariableNumberX(variableBox_1.getSelectedIndex());
    hg1.setVariableNumber(variableBox_1.getSelectedIndex());
    sp.setXvariableText(dataModel.getVariableNames().get(variableBox_1.getSelectedIndex()));
});

Answer 1

使用JComboBox#setSelectedIndex(int anIndex) :

Selects the item at index anIndex.

要选择列表中的项目，请使用 JComboBox#setSelectedItem(Object anObject) .