Question 1: (40 points)

Consider the program buttonsq.java that creates 12 buttons.

A)  Modify the program such that:

• When a button B (B=1..11) is pressed, the program writes the following message to the stdout: Button B is pressed

• When Button 0 is pressed, the program writes the following message  to the stdout:    Button 0 is pressed: Quitting  and then the program terminates.

Solution A:  buttonsq1.java

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B)  Modify the program  such that the 12  buttons are arranged as follows:

1. Button 1 is placed at the top
2. Button 2 is placed at the left
3. Button 3 is placed at the right
4. Button 0 is placed at the center
5. Buttons  4-11 are arranged into two rows  and
    four columns and are  placed at the button.

Solution B:   buttonsq2.java

Consider the following Java Programs:

• The first program,  TwoChatServer.java  waits until two ChatClients arrive, then creates a thread for each client. Any message that arrives from one client is sent to the other. The server is terminated whenever one of the two clients stops sending messages.

• The second program,  ChatClient.java  creates two threads, one thread reads the messages typed on the keyboard and sends them the server while the other thread reads the messages arrived from the server and displays them to the tty.

Rewrite both of these two programs in C using  select
(i.e., do NOT use fork  or threads).

Solution:  TwoChatServer.c
Solution:   ChatClient.c