java gui form image not showing dialog message not working

I would like to insert an image into my JFrame but it is not showing. The image file is "a.jpg"

This is the output I get

Here is my code.

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

class myself extends JFrame
{	
	public myself()
	{
		super("Introduction to myself");
		setLayout(new FlowLayout());

        JLabel jl = new JLabel("Name");
		JTextField jtf = new JTextField("random name",20);
        jtf.setEnabled(false);
        jtf.setBackground(Color.gray);
        jl.setVerticalAlignment(SwingConstants.TOP);
        add(jl);
        add(jtf);

        JLabel jl1 = new JLabel("Date of Birth");
		JTextField jtf1 = new JTextField("not today",20);
		jtf1.setEnabled(false);
        jtf1.setBackground(Color.gray);
        jl1.setVerticalAlignment(SwingConstants.CENTER);
        add(jl1);
        add(jtf1);

        JLabel jl2 = new JLabel("Email");
        JTextField jtf2 = new JTextField("thisismyemail@gmail.com",20);
        jtf2.setEnabled(false);
        jtf2.setBackground(Color.gray);
        jl2.setVerticalAlignment(SwingConstants.BOTTOM);
        add(jl2);
        add(jtf2);

		ImageIcon ic = new ImageIcon("a.jpg");
        JLabel jl3 = new JLabel("My comments to the subject, will update further", ic, SwingConstants.LEFT);
        jl3.setToolTipText ("I am rabbit");
        add(jl3);

        JTextField comment1 = new JTextField(20);
        add(comment1);

        JTextField comment2 = new JTextField(20);
		add(comment2);

        comment1.addActionListener(new ActionListener()
        {
            String c1 = comment1.getText();
            String c2 = comment2.getText();
            String s = "1. " + c1 + " 2. " + c2;

            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane.showMessageDialog(null, s, "My suggestion to the course", JOptionPane.WARNING_MESSAGE);
            }
        });

        comment2.addActionListener(new ActionListener()
        {
            String c1 = comment1.getText();
            String c2 = comment2.getText();
            String s = String.format("1. " + c1 + " 2. " + c2);

            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane.showMessageDialog(null, s, "My suggestion to the course", JOptionPane.WARNING_MESSAGE);
            }
        });
    }
}

class Lab3
{
	public static void main (String [ ] args)
	{
		myself ms = new myself();
		ms.setSize(200, 300);
		ms.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		ms.setVisible(true);
	}
}

Also, apart from the image problem, I am also facing problem with my ActionListener.
I would like to get this as my output, after I finish typing in the text boxes and hit ENTER

But this is what I get with the code I have right now.

1. Change name of class myself to Myself according to java naming conventions
2. Use a more appropriate layout manager. GridBagLayout is good for forms that contain JLabel and JTextField pairs. Refer to Laying Out Components Within a Container
3. Your image file is not found. According to your code, it is supposed to be in the current working directory which is the value returned by this code.

System.getProperty("user.dir")

Refer to How to Use Icons

4. In order for the actionPerformed() method to correctly display the text from comment1 and comment2, you need to get the text from inside the method. Refer to Nested Classes
5. Call method pack rather than setSize().
6. Consider also calling method setLocationByPlatform

Here is my refactored version of your code.

import java.awt.Color;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.SwingConstants;

public class Lab3 {
    public static void main(String[] args) {
        Myself ms = new Myself();
        ms.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        ms.pack();
        ms.setLocationByPlatform(true);
        ms.setVisible(true);
    }
}

class Myself extends JFrame {
    public Myself() {
        super("Introduction to myself");
        setLayout(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();

        gbc.gridx = 0;
        gbc.gridy = 0;
        JLabel jl = new JLabel("Name");
        JTextField jtf = new JTextField("random name", 20);
        jtf.setEnabled(false);
        jtf.setBackground(Color.gray);
        jl.setVerticalAlignment(SwingConstants.TOP);
        add(jl, gbc);
        gbc.gridx = 1;
        add(jtf, gbc);

        gbc.gridx = 0;
        gbc.gridy = 1;
        JLabel jl1 = new JLabel("Date of Birth");
        JTextField jtf1 = new JTextField("not today", 20);
        jtf1.setEnabled(false);
        jtf1.setBackground(Color.gray);
        jl1.setVerticalAlignment(SwingConstants.CENTER);
        add(jl1, gbc);
        gbc.gridx = 1;
        add(jtf1, gbc);

        gbc.gridx = 0;
        gbc.gridy = 2;
        JLabel jl2 = new JLabel("Email");
        JTextField jtf2 = new JTextField("thisismyemail@gmail.com", 20);
        jtf2.setEnabled(false);
        jtf2.setBackground(Color.gray);
        jl2.setVerticalAlignment(SwingConstants.BOTTOM);
        add(jl2, gbc);
        gbc.gridx = 1;
        add(jtf2, gbc);

        gbc.gridx = 0;
        gbc.gridy = 3;
        ImageIcon ic = new ImageIcon("a.jpg");
        JLabel jl3 = new JLabel("My comments to the subject, will update further",
                                ic,
                                SwingConstants.LEFT);
        jl3.setToolTipText("I am rabbit");
        add(jl3, gbc);

        gbc.gridx = 1;
        JTextField comment1 = new JTextField(20);
        add(comment1, gbc);

        gbc.gridy = 4;
        JTextField comment2 = new JTextField(20);
        add(comment2, gbc);

        comment1.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                String c1 = comment1.getText();
                String c2 = comment2.getText();
                String s = "1. " + c1 + " 2. " + c2;
                JOptionPane.showMessageDialog(Myself.this, s, "My suggestion to the course",
                        JOptionPane.WARNING_MESSAGE);
            }
        });

        comment2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                String c1 = comment1.getText();
                String c2 = comment2.getText();
                String s = String.format("1. " + c1 + " 2. " + c2);
                JOptionPane.showMessageDialog(Myself.this, s, "My suggestion to the course",
                        JOptionPane.WARNING_MESSAGE);
            }
        });
    }
}

And this is how it looks when I run the above code.