Having a problem making an image appear in a java applet

[Force Flow]

Here's the code. Basically, it's a login/splashscreen window for the program I'm writing. The only problem is that I can't get the splash screen picture to appear.

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

public class main_interface extends JFrame{
    
    public main_interface(){
        
        //confirmation window
        setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
        addWindowListener(new confirmationwindow());
        
        //login entry
        JLabel userL = new JLabel("User Name:", SwingConstants.RIGHT);
        JLabel passL = new JLabel("Password:", SwingConstants.RIGHT);        
        TextField userTF = new TextField(10);
        TextField passTF = new TextField(10);
        JButton loginB = new JButton("Login");
                
        //splash screen
        JLabel splashL = new JLabel();
        ImageIcon splashscreen = new ImageIcon("logo.jpg");
        splashL.setIcon(splashscreen);
                
        //userTF panel
        JPanel userTFP = new JPanel();
        userTFP.setLayout(new FlowLayout());
        userTFP.add(userTF);
        
        //passTF panel
        JPanel passTFP = new JPanel();
        passTFP.setLayout(new FlowLayout());
        passTFP.add(passTF);
        
        //login button panel
        JPanel loginBP = new JPanel();
        loginBP.setLayout(new FlowLayout());
        loginBP.add(loginB);
        
        //main panel
        JPanel mainP = new JPanel();
        mainP.setLayout(new GridLayout(1,5));
        mainP.add(userL);
        mainP.add(userTFP);
        mainP.add(passL);
        mainP.add(passTFP);
        mainP.add(loginBP);
                
        //border for login panel
        Border loginborder = BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(EtchedBorder.LOWERED), "User Login" );
        mainP.setBorder(loginborder);
        
        //main container
        Container pane = getContentPane();
        pane.setLayout(new BorderLayout());
        pane.add(splashL, BorderLayout.CENTER);
        pane.add(mainP, BorderLayout.SOUTH);                
        
    }
    
    
    //confirmation window call
    private class confirmationwindow extends WindowAdapter {        
        public void windowClosing(WindowEvent e) {            
            
            int r = JOptionPane.showConfirmDialog(null, "Are you sure you want to exit?", "Records Retention Database", JOptionPane.YES_NO_OPTION);
            if (r == JOptionPane.YES_OPTION)
                System.exit(0);
                //dispose();
       }
    }
    
        
    
    public static void main(String [] args) {
        main_interface login = new main_interface();
        login.setTitle("Records Retention Database Login");
        login.setVisible(true);
        login.setSize(600, 400);
    }
    
}

[Force Flow]

I also tried this, but createImageIcon isn't being found for some reason. Does it need a specified package imported?

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

public class main_interface extends JFrame{
    
    public main_interface(){
        
        //confirmation window
        setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
        addWindowListener(new confirmationwindow());
        
        //login entry
        JLabel userL = new JLabel("User Name:", SwingConstants.RIGHT);
        JLabel passL = new JLabel("Password:", SwingConstants.RIGHT);        
        TextField userTF = new TextField(10);
        TextField passTF = new TextField(10);
        JButton loginB = new JButton("Login");
        //loginB.setPreferredSize(new Dimension(10,40));
        
        //splash screen
        ImageIcon icon = createImageIcon("logo.jpg");
        JLabel splashL = new JLabel(icon, JLabel.CENTER);
                
        //userTF panel
        JPanel userTFP = new JPanel();
        userTFP.setLayout(new FlowLayout());
        userTFP.add(userTF);
        
        //passTF panel
        JPanel passTFP = new JPanel();
        passTFP.setLayout(new FlowLayout());
        passTFP.add(passTF);
        
        //login button panel
        JPanel loginBP = new JPanel();
        loginBP.setLayout(new FlowLayout());
        loginBP.add(loginB);
        
        //main panel
        JPanel mainP = new JPanel();
        mainP.setLayout(new GridLayout(1,5));
        mainP.add(userL);
        mainP.add(userTFP);
        mainP.add(passL);
        mainP.add(passTFP);
        mainP.add(loginBP);
                
        //border for login panel
        Border loginborder = BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(EtchedBorder.LOWERED), "User Login" );
        mainP.setBorder(loginborder);
        
        //main container
        Container pane = getContentPane();
        pane.setLayout(new BorderLayout());
        pane.add(splashL, BorderLayout.CENTER);
        pane.add(mainP, BorderLayout.SOUTH);                
        
    }
    
    
    //confirmation window call
    private class confirmationwindow extends WindowAdapter {        
        public void windowClosing(WindowEvent e) {            
            
            int r = JOptionPane.showConfirmDialog(null, "Are you sure you want to exit?", "Records Retention Database", JOptionPane.YES_NO_OPTION);
            if (r == JOptionPane.YES_OPTION)
                System.exit(0);
                //dispose();
       }
    }
    
        
    
    public static void main(String [] args) {
        main_interface login = new main_interface();
        login.setTitle("Records Retention Database Login");
        login.setVisible(true);
        login.setSize(600, 400);
    }
    
}

[Force Flow]

Nevermind guys, I got it. I had to specify the directory path.