找不到适合 JDateChooser(string,string,char) 的构造函数

Question

我是 java 的新手，我尝试修复一些朋友遇到问题的代码，但我遇到了一个让我有点困惑的错误，我得到的错误是：

no suitable constructor found for JDateChooser(String,String,char)
    constructor JDateChooser.JDateChooser() is not applicable
      (actual and formal argument lists differ in length)
    constructor JDateChooser.JDateChooser(ImageIcon) is not applicable
      (actual and formal argument lists differ in length)
    constructor JDateChooser.JDateChooser(boolean) is not applicable
      (actual and formal argument lists differ in length)
    constructor JDateChooser.JDateChooser(String,boolean) is not applicable
      (actual and formal argument lists differ in length)
    constructor JDateChooser.JDateChooser(JCalendar) is not applicable
      (actual and formal argument lists differ in length)
    constructor JDateChooser.JDateChooser(JCalendar,String,boolean,ImageIcon) is not applicable
      (actual and formal argument lists differ in lengt...

我尝试为其添加构造函数，但我对 java 的了解不足以修复它
这是代码示例。错误出现在代码的最后两行

        public void actionPerformed(ActionEvent e) {
            Reservation = new JFrame();
            Reservation.setAlwaysOnTop(true);
            Reservation.setTitle("R\u00E9servation");
            Reservation.getContentPane().setLayout(null);
            
            
            JPanel clientPan = new JPanel();
            clientPan.setBorder(new TitledBorder(new LineBorder(new Color(0, 0, 0), 1, true), "Client", TitledBorder.LEADING, TitledBorder.TOP, null, null));
            clientPan.setBounds(10, 11, 424, 211);
            Reservation.getContentPane().add(clientPan);
            clientPan.setLayout(null);
            
            JPanel selectClientPan = new JPanel();
            selectClientPan.setBorder(new TitledBorder(new LineBorder(new Color(0, 0, 0), 1, true), "S\u00E9lection Client", TitledBorder.LEADING, TitledBorder.TOP, null, null));
            selectClientPan.setBounds(215, 21, 177, 154);
            clientPan.add(selectClientPan);
            selectClientPan.setLayout(null);
            
            
            final ComplexSwingX list = new ComplexSwingX(hotel);
            list.setBounds(10, 29, 157, 114);           
            selectClientPan.add(list);
            
            
            JPanel createClientPan = new JPanel();
            createClientPan.setBorder(new TitledBorder(new LineBorder(new Color(0, 0, 0), 1, true), "Cr\u00E9ation Client", TitledBorder.LEADING, TitledBorder.TOP, null, null));
            createClientPan.setBounds(10, 21, 195, 154);
            clientPan.add(createClientPan);
            createClientPan.setLayout(null);
            
            JLabel lblNom = new JLabel("Nom : ");
            lblNom.setBounds(10, 24, 60, 14);
            createClientPan.add(lblNom);
            
            JLabel lblAdresse = new JLabel("Adresse : ");
            lblAdresse.setBounds(10, 124, 60, 14);
            createClientPan.add(lblAdresse);
            
            JLabel lblPrnom = new JLabel("Pr\u00E9nom");
            lblPrnom.setBounds(10, 74, 60, 14);
            createClientPan.add(lblPrnom);
            
            clientName = new JTextField();
            clientName.setBounds(99, 21, 86, 20);
            createClientPan.add(clientName);
            clientName.setColumns(10);
            
            clientFirstname = new JTextField();
            clientFirstname.setBounds(99, 71, 86, 20);
            createClientPan.add(clientFirstname);
            clientFirstname.setColumns(10);
            
            clientAddress = new JTextField();
            clientAddress.setBounds(99, 118, 86, 20);
            createClientPan.add(clientAddress);
            clientAddress.setColumns(10);
            
            final JPanel reservationPan = new JPanel();
            reservationPan.setVisible(false);
            reservationPan.setBorder(new TitledBorder(new LineBorder(new Color(0, 0, 0), 1, true), "R\u00E9servation", TitledBorder.LEADING, TitledBorder.TOP, null, null));
            reservationPan.setBounds(69, 230, 323, 194);
        
            final JDateChooser D1 = new JDateChooser("dd/MM/yyyy", "####/##/####", '_');
            final JDateChooser D2 = new JDateChooser("dd/MM/yyyy", "####/##/####", '_');

Answer 1

您的问题正是错误消息告诉您的问题。这些行：

final JDateChooser D1 = new JDateChooser("dd/MM/yyyy", "####/##/####", '_');
final JDateChooser D2 = new JDateChooser("dd/MM/yyyy", "####/##/####", '_');

是无效语法，因为 JDateChooser class 没有将两个字符串和一个字符作为参数的构造函数。错误消息列出了 class 包含的所有构造函数。如果你想创建一个 JDateChooser，你必须使用它提供的构造函数之一来创建它。

找不到适合 JDateChooser(string,string,char) 的构造函数

No suitable constructor found for JDateChooser(string,string,char)

java

jdatechooser

jcalendar