Thread: How to open new windows after pressing button next?

In that rar file below is my sketch ouput that i want to make. my question is, how to create/connect to a new windows/frame after pressing button next? this is my unfinish coding for first frame, what should i add for btnNext method?

import java.awt.*; 
import java.awt.event.*; 
import javax.swing.*;
import javax.swing.border.*;
 
public class GoKart extends JFrame implements ActionListener
 {
    private JLabel lblName, lblIC, lblGen, lblPn, lblMail;
    private JTextField txtName, txtIC, txtGen, txtPn, txtMail;
    private JButton btnReset, btnNext;
    private JPanel pnlA, pnlB, pnlPersonalDetails;
    private Container cont;
    private GridLayout layout;
 
    public GoKart()
    {
        //set the title
        super ("Go-Kart Booking Online Form");
        layout = new GridLayout(6, 2);
 
        cont = getContentPane();
        cont.setLayout(layout);
 
        //set label
        lblName = new JLabel ("Name: ");
        lblIC = new JLabel ("IC: ");
        lblMail = new JLabel ("Email: ");
        lblGen = new JLabel ("Gender: ");
        lblPn = new JLabel ("Phone Number: ");
 
        //set textfield
        txtName = new JTextField(10);
        txtIC = new JTextField(10);
        txtMail = new JTextField(10);
        txtPn = new JTextField(10);
 
        //set button
        btnReset = new JButton("Reset");
        btnNext = new JButton("Next");
 
        //set panel
        pnlA = new JPanel();
        pnlA.setLayout(new GridLayout(5, 2));
 
        pnlB = new JPanel();
        pnlB.setLayout(new GridLayout(1,2));
 
        pnlPersonalDetails = new JPanel();
        pnlPersonalDetails.setLayout(new GridLayout(1,0));
        pnlPersonalDetials.setBorder(new TitledBorder(new EtchedBorder(),"Personal Details"));
 
        //add to JPanel
        pnlA.add(lblName);
        pnlA.add(txtName);
        pnlA.add(lblIC);
        pnlA.add(txtIC);
        pnlA.add(lblGen);
        pnlA.add(txtGen);
        pnlA.add(lblPn);
        pnlA.add(txtPn);
        pnlA.add(lblMail);
        pnlA.add(txtMail);
 
        pnlB.add(btnReset);
        pnlB.add(btnNext);
 
        pnlPersonalDetails.add(pnlA);
 
        //register listener
        btnReset.addActionListener (this);
        btnNext.addActionListener (this);
 
        //add to Container
        cont.add(pnlPersonalDetails, BorderLayout.NORTH);
        cont.add(pnlB, BorderLayout.SOUTH);
 
        setSize (500, 250); 
        setVisible (true); 
        setDefaultCloseOperation (EXIT_ON_CLOSE);
    }
 
    public void actionPerformed (ActionEvent e)
    {
       if(e.getSource() = btnReset)
       {
           txtName.setText("");
           txtIC.setText("");
           txtGen.setText("");
           txtPn.setText("");
           txtMail.setText("");
       }
       else if(e.getSource() = btnNext)
       {

errr how?

i already declare jbutton for btnNext.i dont know what should i write to connect a new frame when i press button next. whats code should i write to connect those frame? please have a look that rar file.

Can you post the contents of the .rar because many people (myself included) will not open a .rar for security reasons. You can use only the 1 JFrame you have and place the contents of the other window in a JOptionPane or a JDialog. I tend to prefer this design because it's simpler, don't need to juggle JFrames and JOptionPane forces the user to interact in it (i.e. they cannot get focus by trying to click outside of it). The JFrame would initially have its contents set to invisible and once the user enters something correct or does something in the JOptionPane or JDialog, verify it and make the JFrame contents visible. You can make them visible using the method .setVisible(Boolean : boolean), where true makes it visible, false makes it invisible.

Alternatively, you can have multiple JFrames by creating instances of each and calling upon their references to get the methods as Norm mentioned.

if(e.getSource() == btnNxt). Use "==" here instead of "=" otherwise it won't work.

it should be if(e.getSource() == btnNxt)
{
Car mycar = new Car() //This is the new window that you want to open. it may be anyclass.
}