单击 JOptionPane.showMessageDialog 的确定按钮后如何关闭其他 Swing window

Question

I'm creating a login window, and the examples I found are having difficulty implementing because they don't show how to move on to the next window after trying to log in. Because It does not tell me how to close Login window and then opens other process's window after "login done" or "Confirm to login" message.

I made UI design with IntelliJ and this is my code. I know this code occours Error. because JOptionPane.showMessageDialog() returns void but i tried to get int return. I uesd it Just for example.

I understand that I have to use "JOptionPane.showConfirmDialog" to receive input as an integer type, but I just want to let user know that they just have logged in, so I don't want to show anything other than the OK button.

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class LoginForm {
    private JPanel Login;
    private JTextField IDField;
    private JPasswordField PasswordField;
    private JButton LoginOKBtn;
    private JButton btnIDFind;
    private JButton btnPWFind;
    private JButton btnCreateAccount;

    //Test ID and Password
    final String testID="user";
    final String testPW="pw";

    public LoginForm() {
        //Login Btn Event
        LoginOKBtn.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                String ID=IDField.getText();
                String PW=new String(PasswordField.getPassword());
                System.out.println(ID);
                System.out.println(PW);

                //when ID and PW is collect then Show Dialog
                if (ID.equals(testID) && PW.equals(testPW)){
                    int loginOKbtnclicked = JOptionPane.showMessageDialog(null, "Succesfully Loged in!", "Info", JOptionPane.YES_OPTION);
                    if (loginOKbtnclicked == JOptionPane.OK_OPTION){
                        System.out.println("TODO - Closing Window Code");
                    }
                    else{

                    }
                }
                else {
                    JOptionPane.showMessageDialog(null,"WRONG Password or ID","Alert!",JOptionPane.WARNING_MESSAGE);
                }
            }
        });
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("Login");
        frame.setContentPane(new LoginForm().Login);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }
}

Answer 1

Just put the new frame after the messagebox. And put the current frame here, do not send it with null . JOptionPane.showMessageDialog(**null**, "Succesfully Loged in,", "Info". JOptionPane;YES_OPTION);

Then change the visibility of the current frame, or do what you like. You do not need to do check if he clicked the button or not. Since that messagebox has no purpose other than saying "You are in".

Answer 2

I solved this using JOptionPane.showOptionDialog() . I found JOptionPane.showMessageDialog() returns nothing But JOptionPane.showOptionDialog() returns int value.

This is my Test code

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class Login {
    private JPanel LoginPanel;
    private JButton button1;

    public static void main(String[] args) {
        JFrame frame=new JFrame("LOGIN!");
        frame.setContentPane(new Login().LoginPanel);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }

    public Login() {
        button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                Object[] options={"OK"};
                int in=-1;
                in=JOptionPane.showOptionDialog(
                        LoginPanel,
                        "Give me your choice",
                        "Info",
                        JOptionPane.NO_OPTION,
                        JOptionPane.INFORMATION_MESSAGE,
                        null,
                        options,
                        options[0]
                );
                if (in==0){
                    //Put Here closing old window code!
                    System.out.println("WAAAA");
                }
            }
        });
    }
}