A$.$ Write the GUI with a textfield and implement the code so that the user can type into the

textfield and see the text they typed in printed on the command prompt.

B$.$ The user is supposed to be typing in a file name such as matrix$1.$txt$.$ Now modify

your code so that the text the user typed in is used as the filename that is opened. Open

the file and read in the data $($number of rows, number of columns, and the two integer

matrices$).$ This code can be copy pasted $($with a few small modifications$)$ from the

previous lab.

C$.$ Pass the two matrices to the Server and write the server so that it displaysthe matrices

on its end $($either through a Server GUI or on the Server$-$side command prompt$).$

DO NOT perform any matrix calculations on the Server side yet. Don$$t create threads or sum

quadrants or calculate indexes. I want to make sure Part $1$ is completed successfully before

you move on$.$

Instructions for P

USING

$//$ Ask user to enter the matrix file

$//***$ not covered:

$//$ Perform the multi$-$thread computation and gather the result

$//$ Display the result on the JScrollPane

$//$ Demo: Display the content of the matrix from the file opened by the previous step

import java.awt.BorderLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io$.$IOException;

import javax.swing.JEditorPane;

import javax.swing.JFrame;

import javax.swing.JScrollPane;

import javax.swing.JTextField;

import javax.swing.JTextArea;

import java.util.Scanner;

import java.io$.$File;

import java.io$.$FileNotFoundException;

public class ReadWriteData extends JFrame

$\{$

private JTextField enterField; $//$ JTextField to enter the matrix file name

private JTextArea displayArea; $//$ JTextAreato display the computation result

private File file;

private Scanner input;

$//$ set up GUI

public ReadWriteData$()$

$\{$

super$("$Open File and Output Data Example"$)$;

$//$ create enterField and register its listener

enterField $=$ new JTextField$("$Enter file name here"$)$;

add$($enterField$,$ BorderLayout.NORTH$)$;

displayArea $=$ new JTextArea$()$;

add$($new JScrollPane$($displayArea$),$ BorderLayout.CENTER$)$;

enterField.addActionListener$($

new ActionListener$()\{$

$//$ get the file name specified by user

public void actionPerformed$($ActionEvent event$)\{$

getFile$($event$.$getActionCommand$())$;

$\}$

$\}$

$)$;

setSize$(400,300)$; $//$ set size of window

setVisible$($true$)$; $//$ show window

$\}$

$//$ load document

private void getFile$($String file$\_$name$)$

$\{$

file $=$ new File$($file$\_$name$)$;

try $\{$

input $=$ new Scanner$($file$)$;

$\}$ catch $($FileNotFoundException e$)\{$

System.out.printf$("\%$nError on file: $\%$s $($either enpty or wrong file format$)\%$n$\%$n$",$ file$)$;

e$.$printStackTrace$()$;

System.exit$(1)$;

$\}$

String s;

while $($input$.$hasNextLine$())\{$

s $=$ input.nextLine$()$;

displayArea.append$($s $+"$

$")$;

$\}$

$\}$

$\}$

AND THIS

$//$ Create and start a ReadWriteData object.

import javax.swing.JFrame;

public class ReadWriteDataTest

$\{$

public static void main$($String$[]$ args$)$

$\{$

ReadWriteData application $=$ new ReadWriteData$()$;

application.setDefaultCloseOperation$($JFrame$.$EXIT$\_$ON$\_$CLOSE$)$;

$\}$

$\}$