CSIT121 Object Oriented Design and Programming

Objectives:

Practice java programming with GUI, Collections.

Task 1: (6 marks)

What  is  this?  When  I  conducted  the  Java  workshop  recently  my  brain already had what I would have if I was asked to design a Q & A room. The room usually divided into two areas: the participant area and the host area.

Here is the 1st interaction, someone raises a question:

You may want to  ask who raise the question. A lot of participants in  a conference or  a workshop; you  can  also  say  this  is my  CSIT121  online lesson and a student raises a question and I, the host, provide the answer.

We can assume that all participants have a button of their own to press. Now for example, Heng 3 presses the button (each button has a default image, and the button changes the color when the mouse moves over the button), the following panel is displayed:

In the above image, you can see that another panel popping out.  To let you have better view of the popped panel, here it is:

You  can  see  that  the  student’s  photo,  his  or  her  actual  name,  and  what tutorial class he or she attends is displayed in the popped panel; Heng 3 is just a label to the button; and each button has a default image. The  1st  three lines in above panel came from some “toString” info!!!

When the OK button is pressed in the above panel, we go back to the QA room waiting for the host to reply to the student’s queries:

Now the host replies to student’s query in the host’s area. The mouse now moves to the “Host” button, and you see a change of new image too. You now press the host’s button; another panel is popping out, displaying the host’s reply:

To let you see better of the host’sreplied panel:

When the OK button is pressed, you can now go back to the Q & A room to do some housing keeping:

Finally, you press the clear button to erase the messages stored inside the two text areas, i.e. you go back to the 1st  screen:

You also need to design a class to describe what a participant is.

Usual info for a class, for example, instance variables, constructors, accessor methods, mutator methods; of course don’t forget the toString method that you need to use in this design.