How to Create a Login Form in Java using MySQL Database? | Login and Registration in Java [With Source Code]

Code:
[clicking event of login button]

import java.sql.*
Connection con;
PreparedStatement pstmt;
ResultSet rs;
       try {                                         
            try {
                // TODO add your handling code here:
                con = DriverManager.getConnection("jdbc:mysql://localhost/javalogin","root","admin");
            } catch (SQLException ex) {
                Logger.getLogger(LoginPage.class.getName()).log(Level.SEVERE, null, ex);
            }
            String query= "SELECT * FROM javalogin WHERE username=? AND password=?";
            pstmt=con.prepareStatement(query);
            pstmt.setString(1, txtUser.getText());
            pstmt.setString(2, String.valueOf(jPasswordField2.getPassword()));
            rs=pstmt.executeQuery();
            if(rs.next()){
                JOptionPane.showMessageDialog(null, "Login Success");
            }else{
                JOptionPane.showMessageDialog(null, "Login Error");
            }
            
            
        } catch (SQLException ex) {
            Logger.getLogger(LoginPage.class.getName()).log(Level.SEVERE, null, ex);
        }

show hide password:[in the clicking event of checkbox]

        if(chkPass.isSelected()){
            jPasswordField2.setEchoChar((char)0);
        }else{
            jPasswordField2.setEchoChar('\u25CF');
        }

Register page opening code

Registration rs= new Registration();
rs.setVisible(true);

More: