Question: i need help with this java assigment i have my...

I need help with this java assigment, I have my code provided and documents to help. Im not sure how to do GUIs

package lab1in;

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

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class ClientGUI extends JFrame {

// Variables declaration
private JButton connect;
private JPanel north;
private JLabel output;
private JPanel south;
private JLabel status;
private JButton stop;
private JButton submit;
  
//contructor that passes one parameter
public ClientGUI(String title) {
this.setTitle(title); //set the title
  
GridBagConstraints gridBagConstraints;

north = new JPanel();
status = new JLabel();
output = new JLabel();
south = new JPanel();
connect = new JButton();
submit = new JButton();
stop = new JButton();

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
java.awt.GridBagLayout layout = new java.awt.GridBagLayout();
layout.columnWidths = new int[] {0, 15, 0, 15, 0, 15, 0, 15, 0, 15, 0, 15, 0, 15, 0, 15, 0, 15, 0, 15, 0};
layout.rowHeights = new int[] {0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0};
getContentPane().setLayout(layout);

status.setText("Status");
north.add(status);

output.setText("output");
output.setName("lblOutput");
output.setForeground(Color.RED);
north.add(output);

//set the button label to the grid panel
gridBagConstraints = new GridBagConstraints();
gridBagConstraints.gridx = 6;
gridBagConstraints.gridy = 0;
getContentPane().add(north, gridBagConstraints);
gridBagConstraints = new GridBagConstraints();
gridBagConstraints.gridx = 2;
gridBagConstraints.gridy = 0;
getContentPane().add(south, gridBagConstraints);

connect.setText("Connect");
connect.setName("connect");
connect.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
connectActionPerformed(evt);
System.out.println("Connect button pressed");
}
});
gridBagConstraints = new GridBagConstraints();
gridBagConstraints.gridx = 6;
gridBagConstraints.gridy = 32;
getContentPane().add(connect, gridBagConstraints);

submit.setText("Submit");
submit.setName("submit");
submit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
submitActionPerformed(evt);
System.out.println("Submit button pressed");
}
});
gridBagConstraints = new GridBagConstraints();
gridBagConstraints.gridx = 10;
gridBagConstraints.gridy = 32;
getContentPane().add(submit, gridBagConstraints);

stop.setText("Stop");
stop.setName("stop");
stop.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
stopActionPerformed(evt);
System.out.println("Stop button pressed");
}
});
gridBagConstraints = new GridBagConstraints();
gridBagConstraints.gridx = 14;
gridBagConstraints.gridy = 32;
getContentPane().add(stop, gridBagConstraints);

pack();
}
  
//connect button press event
private void connectActionPerformed(ActionEvent evt) {
String show="Connect Button Pressed";
output.setText(show);
}   

//submit button press event
private void submitActionPerformed(ActionEvent evt) {
String show="Submit Button Pressed";
output.setText(show);
}

//stop button press event
private void stopActionPerformed(ActionEvent evt) {
String show="Stop Button Pressed";
output.setText(show);
}

//main method
public static void main(String args[]) {
ClientGUI cg = new ClientGUI(args[0]);
cg.setVisible(true);
}
}