How to write this assignment in oom way(long)
i try to write a new class, but i am not very sure if there is only one new class, I shall write a Movie class or a Ticket class?
this is my Movie class, if I also want to write a new Ticket class. and still i don't know how to write
because the Ticket class uses some of the attributes of the Movie class such as start time, Movie.name, as in this situation the relation
between Ticket and Movie is still aggregation, or become a generalization?
and how to represent that a Movie can have many Tickets? I shall write a buy-ticket method inside the Ticket class or Movie class.
(are there any thing not right with this movie class? thanks)
============================
class Movie
String name;
String startTime;
String [] coupleChair=new String[11];//start from 1 to 10
String [] singleChair=new String[11];//start from 1 to 10
public Movie(String str1st)
this.name=str1st;
public Movie(String str1st, String str2nd)
this.name=str1st;
this.startTime=str2nd;
public String buyA_Single_Ticket()
int i=1;
do
if(this.singleChair!="sold")
this.singleChair[i]="sold";
return "You seat is Single Seat No."+i+"\n Enjoy the movie :)";
else i++;
while(i<=10);//when i==11 jump out
return "Sorry, all Single seats have been sold Out";
public String buyA_Couple_Ticket()
int i=1;
do
if(this.coupleChair[i]!="sold")
this.coupleChair[i]="sold";
return "You seat is Couple Seat No."+i+"\n Enjoy the time ;)";
else i++;
while(i<=10);//when i==11 jump out
return "Sorry, all Couple seats have been sold Out";
}//end class
============================
this is the question
A small ABC cinema has just purchased a computer for its new automated reservations system. You have been asked to program the new system. You are to write a Java application to assign seats on each movie show on the day (capacity: 20 seats for 1 movie).
Your program should display the following alternatives: ��Please type 1 for couple seat section�� and ��Please type 2 for normal seat section��. If the user types 1, your program should assign one seat in the couple seat section (seats 1 �C 10). If the person types 2, your program should assign a seat in the normal seat (seats 11 �C 20). Your program should also prompt for the movie time and movie name.
Your program should then display:
I. The person��s seat number
II. Whether it is a couple seat or normal seat of the cinema
III. Time, date, movie name
Your program should never assign a seat that has already been assigned. When the normal seat section is full, your program should ask the person if it is acceptable to be placed in the couple seat section (and vice versa). If yes, make the appropriate seat assignment. If no, print the message ��Next show is in 3 hours time.��
(it is just a small test on my OOM learning, I know it is not necessary to make it so complex.)
Break down your problem into discrete chunks. The more you practice this, the more your initial thoughts will resemble the eventual objects that you will create.
Let's take address a few of your issues:
What has the start time? Is it the ticket or the movie? (Hint: Would someone ever print you out a ticket with a different start time than the movie's?)
If ticket and movie share some attributes, then you can either use inheritance or composition/delegation. In this instance, what makes more sense to you? Is a ticket a movie or vice versa? Or is a ticket simply related to a movie?
If a given object can contain several instances of another object, you will want to use either an array or a collection, probably List in this instance.
Why is there no Theater object? A movie may play at multiple theaters. Each theater has a capacity (in terms of total seats and number already booked). This does not really have anything to do with the movie. It is the Theater that you are booking. It may also have which movies are showing at which time.
Your notion of 'couple' booking seems strange. Why not have a concept like 'consecutive seats required'? That way, your design is more flexible and you can still accomodate couples.That should get you started. Best of luck.
- Saish
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Really need help on how to write this program some 1 plz help me out here.
i am new to java and i confused on how to be writing this program.
i have completed the Part 1 but i am stuck on Part 2 & 3 so it would would be really great if any 1 could help me out on how to write the program.
Part I
An algorithm describes how a problem is solved in terms of the actions to be executed, and it specifies the order in which the actions should be executed. An algorithm must be detailed enough so that you can "walk" through the algorithm with test data. This means the algorithm must include all the necessary calculations.
Here is an algorithm that calculates the cost of a rectangular window. The
total cost of a window is based on two prices; the cost of the glass plus the cost of the metal frame around the glass. The glass is 50 cents per
square inch (area) and the metal frame is 75 cents per inch (perimeter).
The length and width of the window will be entered by the user. The
output of the program should be the length and width (entered by the user)
and the total cost of the window.
FORMULAS:
area = length times width perimeter = 2 times (length plus width)
Here is the corresponding algorithm:
read in the length of the window in inches
read in the width of the window in inches
compute the area
compute the cost of the glass (area times 50 cents)
compute the perimeter
compute the cost of the frame (perimeter times 75 cents)
compute the total cost of the window (cost of glass plus cost of frame)
display the length, width and total cost
The next step would be to "desk check" the algorithm. First you would need to make up the "test data". For this algorithm, the test data would involve making up a length and a width, and then calculating the cost of the window based on those values. The results are computing by hand or using a calculator. The results of your test data are always calculated before translating your algorithm into a programming language. Here is an example of the test data for the problem given:
length = 10
width = 20
area = 200, glass cost= 100.00 (area times 50 cents)
perimeter = 60, frame cost = 45.00 (perimeter times 75 cents)
total cost =145.00
Once the test data is chosen, you should "walk" through the algorithm using the test data to see if the algorithm produces the same answers that you obtained from your calculations.
If the results are the same, then you would begin translating your algorithm into a programming language. If the results are not the same, then you would attempt to find out what part of the algorithm is incorrect and correct it. It is also
necessary to re-check your hand calculations.
Each time you revise your algorithm, you should walk through it with your test data again. You keep revising your algorithm until it produces the same answers as your test data.
?Now write and submit a Java program that will calculate the cost of a rectangular window according to the algorithm explained. Be sure to prompt for input and label your output.?
Part II
Write, compile and execute a Java program that displays the following prompts:
Enter an integer.
Enter a second integer
Enter a third integer.
Enter a fourth integer.
After each prompt is displayed, your program should use the nextint method of the Scanner class to accept a number from the keyboard for the displayed
prompt. After the fourth integer has been entered, your program should calculate and display the average of the four integers and the value of the first integer entered raised to the power of the second integer entered. The average and result of raising to a power should be included in an appropriate messages
(labels).
Sample Test Data:
Set 1: 100 100 100 100
Set 2: 100 0 100 0
Be sure to write an algorithm first before attempting to write the Java code. Walk through your algorithm with test data to be sure it works as anticipated.
Part III
Repeat Part lI but only calculate the average, not the power. This time, make sure to use the same variable name, number, for each of the four numbers input. Also use the variable sum for the sum of the numbers. (Hint: To do this, you may use the statement sum = sum + number after each number is read.)
For Part 1 this is what i got
import java.util.Scanner;
public class Window
public static void main(String[] args)
double length, width, glass_cost, perimeter, frame_cost, area, total;
Scanner keyboard = new Scanner (System.in);
System.out.println("Enter the length of the window in inches");
length = keyboard.nextInt();
System.out.println("Enter the width of the window in inches");
width = keyboard.nextInt();
area = length * width;
glass_cost = area * .5;
perimeter = 2 * (length + width);
frame_cost = perimeter * .75;
total = glass_cost + frame_cost;
System.out.println("The Length of the window is " + length + "inches");
System.out.println("The Width of the window is " + length + "inches");
System.out.println("The total cost of the window is $ " + total);
Enter the length of the window in inches
5
Enter the width of the window in inches
8
The Length of the window is 5.0inches
The Width of the window is 5.0inches
The total cost of the window is $ 39.5
Press any key to continue . . .
Edited by: Adhi on Feb 24, 2008 10:33 AMAdhi wrote:
i am new to java and i confused on how to be writing this program.
i have completed the Part 1 but i am stuck on Part 2 & 3 so it would would be really great if any 1 could help me out on how to write the program.Looks like homework to me.
What have you written so far? Post it.
Part I
An algorithm describes how a problem is solved in terms of the actions to be executed, and it specifies the order in which the actions should be executed. An algorithm must be detailed enough so that you can "walk" through the algorithm with test data. This means the algorithm must include all the necessary calculations.
Here is an algorithm that calculates the cost of a rectangular window. The
total cost of a window is based on two prices; the cost of the glass plus the cost of the metal frame around the glass. The glass is 50 cents per
square inch (area) and the metal frame is 75 cents per inch (perimeter).
The length and width of the window will be entered by the user. The
output of the program should be the length and width (entered by the user)
and the total cost of the window.
FORMULAS:
area = length times width perimeter = 2 times (length plus width)
Here is the corresponding algorithm:
read in the length of the window in inches
read in the width of the window in inches
compute the area
compute the cost of the glass (area times 50 cents)
compute the perimeter
compute the cost of the frame (perimeter times 75 cents)
compute the total cost of the window (cost of glass plus cost of frame)
display the length, width and total cost
The next step would be to "desk check" the algorithm. First you would need to make up the "test data". For this algorithm, the test data would involve making up a length and a width, and then calculating the cost of the window based on those values. The results are computing by hand or using a calculator. The results of your test data are always calculated before translating your algorithm into a programming language. Here is an example of the test data for the problem given:
length = 10
width = 20
area = 200, glass cost= 100.00 (area times 50 cents)
perimeter = 60, frame cost = 45.00 (perimeter times 75 cents)
total cost =145.00
Once the test data is chosen, you should "walk" through the algorithm using the test data to see if the algorithm produces the same answers that you obtained from your calculations.
If the results are the same, then you would begin translating your algorithm into a programming language. If the results are not the same, then you would attempt to find out what part of the algorithm is incorrect and correct it. It is also
necessary to re-check your hand calculations.
Each time you revise your algorithm, you should walk through it with your test data again. You keep revising your algorithm until it produces the same answers as your test data.
“Now write and submit a Java program that will calculate the cost of a rectangular window according to the algorithm explained. Be sure to prompt for input and label your output.”
Part II
Write, compile and execute a Java program that displays the following prompts:
Enter an integer.
Enter a second integer
Enter a third integer.
Enter a fourth integer.
After each prompt is displayed, your program should use the nextint method of the Scanner class to accept a number from the keyboard for the displayed
prompt. After the fourth integer has been entered, your program should calculate and display the average of the four integers and the value of the first integer entered raised to the power of the second integer entered. The average and result of raising to a power should be included in an appropriate messages
(labels).
Sample Test Data:
Set 1: 100 100 100 100
Set 2: 100 0 100 0
Be sure to write an algorithm first before attempting to write the Java code. Walk through your algorithm with test data to be sure it works as anticipated.So this is where you actually have to do something. My guess is that you've done nothing so far.
Part III
Repeat Part lI but only calculate the average, not the power. This time, make sure to use the same variable name, number, for each of the four numbers input. Also use the variable sum for the sum of the numbers. (Hint: To do this, you may use the statement sum = sum + number after each number is read.)Man, this specification writes itself. Sit down and start coding.
One bit of advice: Nobody here takes kindly to lazy, stupid students who are just trying to con somebody into doing their homework for them. If that's you, better have your asbestos underpants on.
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Can anybody help me on this?
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How To Write This Complex Query
hi all
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a vaccination suppose 'FLU' is to be given to an employee or an department(all employees of this department)
EXAMPLE:
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employee 4444 has given only one dose means "FLU1" >>> it means defaulters
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My Nokia N95 is not turning on after I connect it on a usb charger.
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I am trying to fetch a range of data using rownum. 1. This select statmenet works SELECT * from (SELECT id, name, seq from test order by seq desc) where rownum>=1 and rownum<=15 2. This select statmenet does not work SELECT * from (SELECT id, name, s