Question

问题最终不符合我的想法。最终评论给出正确答案......

我正在尝试输入一个程序来输入员工信息，并在被问到时输出信息。

通过在自定义showOptionDialog按钮上点击“New Employee”，系统将提示用户输入有关该员工的信息。

通过点击“检索信息”，用户可以通过输入员工的姓名或号码来检索信息。（但是，我的代码中尚未实现此部分）

    import javax.swing.*;
    import java.awt.*;

    public class InputList {
        public static void main(String[] args) {

            JFrame frame = new JFrame("EmployeeDatabase");

            Object[] options = {
                    "New Employee",
                    "Retrieve Information"
                };

            int selectedValue = JOptionPane.showOptionDialog(
                    null,
                    "Select an option",
                    "Employee Database",
                    JOptionPane.DEFAULT_OPTION,
                    JOptionPane.PLAIN_MESSAGE,
                    null,
                    options,
                    options[0]
                );

            if(selectedValue == 0) {

                String inputStringName = JOptionPane.showInputDialog(
                        "Employee Name",
                        "Last Name, First Name"
                    );

                String inputStringIdentificationNumber = JOptionPane.showInputDialog(
                        "Employee Number",
                        "---"
                    );

                String inputStringAge = JOptionPane.showInputDialog(
                        "Employee Age",
                        "--"
                    );

                String inputStringWorkLevel = JOptionPane.showInputDialog(
                        "Reported Employee Skill Level",
                        "1 - Best : 20 - Worst"
                    );


                if(inputStringName == null) {
                    return;
                }

                String employeeName = inputStringName;
                String employeeIDNumber = inputStringIdentificationNumber;
                String employeeAge = inputStringAge;
                String employeeWorth = inputStringWorkLevel;

                JOptionPane.showMessageDialog(
                        null,
                        employeeIDNumber
                            + "\n"
                            + employeeName
                            + "\n"
                            + employeeAge
                            + " years old"
                            + "\nRating: "
                            + employeeWorth,
                        "Employee Information",
                        JOptionPane.PLAIN_MESSAGE
                    );


            } else if(selectedValue == 1) {
                JOptionPane.showMessageDialog(
                        null,
                        "Program Incomplete",
                        JOptionPane.PLAIN_MESSAGE
                    );
            }
        }
    }

所以，我首先设置了自定义的“新员工”和“检索信息”按钮。

我尝试创建一个showOptionDialog，但每次都这样，我收到此错误消息：

InputList.java:75: error: no suitable method found for showMessageDialog(<null>,String,int)
                                        JOptionPane.showMessageDialog(
                                                   ^
    method JOptionPane.showMessageDialog(Component,Object) is not applicable
      (actual and formal argument lists differ in length)
    method JOptionPane.showMessageDialog(Component,Object,String,int) is not applicable
      (actual and formal argument lists differ in length)
    method JOptionPane.showMessageDialog(Component,Object,String,int,Icon) is not applicable
      (actual and formal argument lists differ in length)
1 error

我试图用frame替换第一个null，但我似乎无法理解如何将JFrame与JDialog和JOptionPane一起使用，正如Java API所使用的那样......任何帮助都表示赞赏。

由于评论无法正常运作：

 Object[] options = { "OK", "CANCEL" };
 JOptionPane.showOptionDialog(null, "Click OK to continue", "Warning",
             JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE,
             null, options, options[0]);

这是我试图使用的模板

and this is the information that's messing me up：

JOptionPane构造函数不包含此参数。代替，在创建包含的JDialog时指定父框架 JOptionPane，您使用JDialog setLocationRelativeTo方法设置对话框位置。

JOptionPane / showOptionDialog

0 个答案: