Question

我刚做了一个小程序，客户从JList中选择3种颜色以及我需要如何将这些颜色添加到Customers对象

我有像这样的构造函数

    public Customer (String cc1, String cc2, String cc3){
    this.colour1 = cc1;
    this.colour2 = cc2;
    this.colour3 = cc3;

我写的简单代码就是这个

public class Test2 extends JApplet {
Container container;
JButton b1;
JPanel panel;
JTextArea area;
String[] colours = {"Yellow", "Orange", "Red", "Purple",
        "Blue", "Green", "Brown", "Black", "White"};
JList list, selectList;
String cc1, cc2, cc3; //Chosen colour

public void init() {
    container = getContentPane();
    panel = new JPanel(new FlowLayout());
    area = new JTextArea();
    b1 = new JButton("Submit");
    list = new JList(colours);
    selectList = new JList();
    list.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
    list.setVisibleRowCount(5);

    panel.add(new JScrollPane(list));
    panel.add(b1);
    panel.add(new JScrollPane(selectList));
    panel.add(area);
    container.add(panel);

    b1.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            for(int i = 0; i < colours.length; i++) {
                Object selected[] = list.getSelectedValues();
                selectList.setListData(selected);
            }
        }
    });
}

}

如何制作，以便该人选择的颜色转到Customer对象谢谢

Answer 1

如果Customer已经存在，那么您需要某种设置器，否则只需创建一个新的Customer对象

您想从列表中选择所选值并将其添加到您可以控制的String数组中，但您只想添加最多3个项目

b1.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
        Object[] values = list.getSelectedValues();
        String[] colors = new String[3];
        for (int index = 0; index < Math.min(3, values.length); index++) {
            colors[index] = values[index].toString();
        }
        Customer customer = new Customer(colors[0], colors[1], colors[2]);
    }
});

或类似的东西

将Selected JList组件添加到Object

1 个答案: