Creating "Class" CRC Cards
Hi everyone,
To study how a mortgage operates we are creating a program in Java that will imitate a bank loan. We need to create CRC cards for the first part of our project which is basically a table in word that lists the class/ methods/ Collaboration.
For example, we have a class called LoanAccount, it does NOT collaborate with any other classes, and we have attributes and methods such as:
*//Attributes*
String accNumber; // Account Number Identifier
String custName;
*//Methods*
Constructor that creates a new object whose data has values specified by these four arguments. activeStatus is set to true.
Public LoanAccount(String accountNumber, String customerName, String address, String phoneNumber, double balance, double interestRate, double prinAmount){}
and we can say something like "Assume all getters and setters" since these are just CRC cards and not the actual program.
Now we've got some information for our LoanAccount class and LoanController class (though they may not be complete)
but we need methods, attributes for:
*Program1App = Application Class - The Systems manager[should do no work or logic]*
LoadUI = provides the view to the user, sends messages to the controller
LoadStoreAccts = responsible for getting and putting account objects from/to disk
We have been working at this (a few of us classmates) with no luck as where to go from here. Any ideas what attributes and methods go in these classes?
We were thinking the LoadUI would continue all the JOptionPane.showMessageDialog statements and LoadStoreAccts would have something to do with I/O statements but we can't seem to find the right code for it.
Any help is much appreciated!
Yes, that is also true, but the people that answer your questions after you are no longer looking are totally wasting their time. So may that can and do help others, will absolutely not post an answer for anyone who has cross-posted. I, myself, have spent quite a bit of time doing custom programming to illustrate an answer to a question posted by what seems to be a serious person, only to see they never come back, so that time and effort was a total waste.
The people here and other places do this voluntarily, usually as a way of giving back a little to the up coming generation of programmers and wannabes, but wasted volunteer time and effort is still just a waste that could have been spent on something that would have been of benefit to the volunteer or others.
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I need to create a bingo card...
Hi I am totally clueless and started my class well behind everybody else. I am not asking for solution to my assignment is the assignment is to create the whole game, all I am asking is how to start. I am supposed to start by creating a Bingo Card. We were given some codes already, like Arraybag, BagADT etc. using General <T>. Could somone please help me get started?
I am trying to create a bingocard class. I am supposed to use the Arraybag.
// ArrayBag.java Author: Lewis/Chase
// Represents an array implementation of a bag.
import java.util.*;
public class ArrayBag<T> implements BagADT<T>
private static Random rand = new Random();
private final int DEFAULT_CAPACITY = 100;
private final int NOT_FOUND = -1;
private int count; // the current number of elements in the bag
private T[] contents;
// Creates an empty bag using the default capacity.
public ArrayBag()
count = 0;
contents = (T[])(new Object[DEFAULT_CAPACITY]);
// Creates an empty bag using the specified capacity.
public ArrayBag (int initialCapacity)
count = 0;
contents = (T[])(new Object[initialCapacity]);
// Adds the specified element to the bag.
// Expands the capacity of the bag array if necessary.
public void add (T element)
if (size() == contents.length)
expandCapacity();
contents[count] = element;
count++;
// Adds the contents of the parameter to this bag.
public void addAll (BagADT<T> bag)
Iterator<T> scan = bag.iterator();
while (scan.hasNext())
add (scan.next());
// Removes a random element from the set and returns it. Throws
// an EmptySetException if the set is empty.
public T removeRandom() throws EmptyBagException
if (isEmpty())
throw new EmptyBagException();
int choice = rand.nextInt(count);
T result = contents[choice];
contents[choice] = contents[count-1]; // fill the gap
contents[count-1] = null;
count--;
return result;
// Removes one occurrence of the specified element from the bag
// and returns it.Throws an EmptyBagException if the bag is empty
// and a NoSuchElementException if the target is not in the bag.
public T remove (T target) throws EmptyBagException,
NoSuchElementException
int search = NOT_FOUND;
if (isEmpty())
throw new EmptyBagException();
for (int index=0; index < count && search == NOT_FOUND; index++)
if (contents[index].equals(target))
search = index;
if (search == NOT_FOUND)
throw new NoSuchElementException();
T result = contents[search];
contents[search] = contents[count-1];
contents[count-1] = null;
count--;
return result;
// Returns a new bag that is the union of this bag and the
// parameter.
public BagADT<T> union (BagADT<T> bag)
ArrayBag<T> both = new ArrayBag<T>();
for (int index = 0; index < count; index++)
both.add (contents[index]);
Iterator<T> scan = bag.iterator();
while (scan.hasNext())
both.add (scan.next());
return both;
// Returns true if this bag contains the specified target
// element.
public boolean contains (T target)
int search = NOT_FOUND;
for (int index=0; index < count && search == NOT_FOUND; index++)
if (contents[index].equals(target))
search = index;
return (search != NOT_FOUND);
// Returns true if this bag contains exactly the same elements
// as the parameter.
public boolean equals (BagADT<T> bag)
boolean result = false;
ArrayBag<T> temp1 = new ArrayBag<T>();
ArrayBag<T> temp2 = new ArrayBag<T>();
T obj;
if (size() == bag.size())
temp1.addAll(this);
temp2.addAll(bag);
Iterator<T> scan = bag.iterator();
while (scan.hasNext())
obj = scan.next();
if (temp1.contains(obj))
temp1.remove(obj);
temp2.remove(obj);
result = (temp1.isEmpty() && temp2.isEmpty());
return result;
// Returns true if this bag is empty and false otherwise.
public boolean isEmpty()
return (count == 0);
// Returns the number of elements currently in this bag.
public int size()
return count;
// Returns an iterator for the elements currently in this bag.
public Iterator<T> iterator()
return new ArrayIterator<T> (contents, count);
// Returns a string representation of this bag.
public String toString()
String result = "";
for (int index=0; index < count; index++)
result = result + contents[index].toString() + "\n";
return result;
// Creates a new array to store the contents of the bag with
// twice the capacity of the old one.
private void expandCapacity()
T[] larger = (T[])(new Object[contents.length*2]);
for (int index=0; index < contents.length; index++)
larger[index] = contents[index];
contents = larger;
======================================================
I started my class like this:
* BingoCard.java
* Created on January 28, 2006, 9:08 PM
* To change this template, choose Tools | Options and locate the template under
* the Source Creation and Management node. Right-click the template and choose
* Open. You can then make changes to the template in the Source Editor.
public class BingoCard {
/** Creates a new instance of BingoCard */
public BingoCard() {
public static void main (String[] args)
ArrayBag<BingoCard> bingoBag = new ArrayBag<BingoCard>();
BingoCard Card;
What can I do or am I doing wrong? Please help me learn.Hey thanks for all the help. I got figured out so thanks again. :D
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(The messages are translated from french)
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ORA-29545: badly formed class: User has attempted to load a class (java.util
.LinkedHashMap$EntryIterator) into a restricted package. Permission can be grant
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I assume, that since you mention coming from Windows, you're used to doing this task in Word. You can do it in Word for Mac. You can probably find quite a few shareware or freeware programs on MacUpdate or VersionTracker. I've used AppleWorks & now Pages for years for this kind of stuff.
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http://tv.adobe.com/watch/learn-photoshop-elements-9/creating-greeting-cards/
Brian -
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I do the following: Hold down the command key and highlight all the items to be reproduced. Then hold down option and drag the items from the first to each subsequent card.
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I dont understand creating classes they seem a waste of time and efficiency
I dont understand why we would want to create classes with constructors and get and set statements... I know that VB and Java did not create these just to have us writing extra code so I am missing something in my thinking.
I read about data hiding and that I understand I guess...but everytime my professors want me to create a class then create an object from that class to access it I dont really get it. I know how to do the basics of it but I can do all of it in my main or the primary class whats the benefit of creating a whole entire class such as the following?
Everytime I get an assignment and they are like create a class and I try to rack my head for a good idea but the nearest analogy I can come up with is this... creating your own class seems like one of those old straws you drink out of with all the loops, yes you can make it go around in a big loop but why waste time? you want to get to point A to point B so create the most efficient way to get there if possible.
I am sure the problem is I am not seeing something and there is some logic missing but I just am getting irritated as I am not seeing it and I am finding it, its like I add an extra obstacle course to my code for no other reason than to run through a bunch of extra tasks that I could perform in my main class or main.
input is welcome to help me arrive at some type of enlightenment thanks
Class may not be the correct wording for this as I know we have to have a class but what I mean is a non application class. The class I have below goes with another class that actually does a lot of stuff but I am forced to push data through this class that basically does nothing but run water through some different pipes if you will. To me thats a waste when I can do everything in my original class which was called menu that I am messing with and that creates an array for a user who wants to keep a list of his items and prices of those items in inventory.
public class Item
private String itemName;
private double itemPrice;
public Item()
public Item (String item, double price)
setName(item);
setPrice(price);
public String getName()
return itemName;
public void setName(String item)
itemName = item;
public double getPrice()
return itemPrice;
public void setPrice(double price)
itemPrice= price;
Edited by: Bricatw on Oct 30, 2009 10:33 PMWhat I was plugging into it and please forgive the code as its not finished... (I am still messing with it) its just for learning and I am required to have certain parts in the Item Class and Certain parts in the Menu class..... But you it pushes through the input to the java bean.... in a case like this I just dont see the need for doing it not that I can think of anyway.
import java.util.Scanner;//my imports for scanner so can read from the screen
import java.util.*;//imports for my array I used astrix to just import it all as the book said it does not have any negative affects.
public class Menu //My application class Menu that contains my main
public static void main(String[] args)//Main method
final int NUMBER_Of_Elements = 30; //created a symbolic constant so that I only have to change the constant
//to edit the size of the array if I should want to change it.
Item[]inventory = new Item[NUMBER_Of_Elements];//I create a new array object with the constant as the number of elements.
Scanner sc = new Scanner (System.in);//created object from the scanner class used to get input from the console screen.
System.out.println("Please enter Item on first line and price on second line.");//outputted text to prompt user and give instructions.
System.out.println("Enter STOP to exit");//instructions on how to exit the program. I would have rather used a different
//word than stop here. If my choice I would have used "exit" as its more widely used and to promote uniformity.
int count;//count variable used to count my loops very important as we use it to control our arrays and loops here.
double price;//our variable that we plug in values from the user via the console.
String item;//same as previously mentioned for the "price"
System.out.println("Wings Coffee Shop Menu");
System.out.println("");
System.out.println("Menu Item Price");
for (count=0; count<inventory.length; ++count)//This is our for loop it uses the length method to control how many times
//it runs. In this case inventory.length = 30 elements so would run 30 times unless it stopped early.
item = sc.nextLine();//reads the input from console into the item variable.
if(item.equalsIgnoreCase("STOP"))//if statement that states if = stop (ignores case sensitivity) then it will break out of the loop.
break;//the break command which is executed if the if statement is true.
price = Double.parseDouble(sc.nextLine());//
inventory[count]= new Item(item, price);
Item Call = new Item(item, price);
System.out.printf("%-13s %.2f\n", Call.getName(), Call.getPrice());
System.out.println("Wings Coffee Shop Menu");
System.out.println("");
System.out.println("Menu Item Price");
// for(int x = 0; x < count; ++x)
// System.out.printf("%15s\n",inventory[x].toString());
// System.out.printf("%-13s %.2f\n", Call.getName(), Call.getPrice());
// String[] namesOfItems = {"Coffee", "Milk", "Soda", "Bagel", "Croissant", "Donut"};
// double[] prices = {3.99, 2.99, 2.49, 2.99, 2.49, 1.99};
// for(int x = 0; x < prices.length; ++x)
// System.out.printf("%-13s %.2f\n", namesOfItems[x], prices[x]);
// Item arrayPrice = new Item(); HOW COME I CANNOT CREATE THIS OBJECT?
// Item call = new Item ();
// Item Call = new Item("item", 4.9);
Edited by: Bricatw on Oct 30, 2009 11:22 PM -
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Click on the Layout button lower right and choose a Vertical lyout from the dropdown
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How do I create a duplicate card in Address Book?
I have searched and found plenty of posts on how to FIND, MERGE or DELETE duplicate cards in Address Book...
- But I want to CREATE a duplicate card. In other words, if I want to create separate cards for 2 married people with the same last name, address and home phone number, is there a fast way to create a second card without having to manually fill in all contact info?
Also, WHERE does one post Address Book questions? This was just a guess.
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RobertI think I understand your question and if so, this is a decently speedy workaround.
1) Create your first card with say the husbands name
2) Go to File > Export > Export vCard
3) Change the name of the card that is in Address Book to the other person ie. the wifes name
4) Go to File > Import > Import vCard (shortcut is Command+O)
5) Now you will have the original vCard you created which is the husbands name and you will have the wife's name as well because you just changed it.
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Hope this helps!
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As a long-time Windows user, I have in the past created many greetings cards and "brochures" using MS Publisher which has an option of a publication layout to produce book-fold publications where I can produce four pages, and then print pages 4 and 1 side by side, and then 2 and 3 on the reverse side (and then fold it like a greetings card).
I am a fairly new Mac user and seeking an alternative to MS
Publisher and have been testing out the trial version of Pages (v.1.0.2) on a real brochure which I have a need to produce and I just cannot get it to do this logically. I have set the document to print two pages side by side, but I have to lay it out with my back page as page 1, then my front page as page 2. If I then set the layout to be facing
pages in order to set inside and outside margins, the pages re-arrange themselves into a different order! The Help files say that odd pages will always be on the right hand side. So - I then reset my pages back to their logical order, and sure enough page 1 is then on the right, followed by 2 and 3 side by side, followed by 4 on the left. However, there is then no way I can then print 4 and 1 side by side, followed by 2 and 3.
I have tried this with all pages in separate sections, and with all pages in one section, and with pages 2-3 in one section, but it makes no difference. I can of course go back to calling page 4 page 1 as above, and that works fine provided I don't want my pages numbered, but it seems a very basic need for anyone trying to use a simple DTP type program. Is there any way to do this? I have read the thread headed "Newby trying to make booklet" posted on 17th January and the answer seems to be that the only way is to export the document to PDF and use a booklet program to print from. This seems crazy!
I would be really grateful for any help, even if it's to say - stop looking - you can't do it. (And in that case is there a good simple not-too-expensive DTP program for the Mac that would do what I want?)Hello Sally,
welcome to the Pages Discussions. The easyst way to
have a "four-pager" by one fold is, to have a
document with only two sheets. Create page 1 and page
4 on the first sheet and the pages 2-3 on the second
sheet of the document. You have to set the paper size
in Pages to landscape, than you can fold the sheet
after printing.
But if you want to have more then a "four-pager" (and
not a many folded flyer), you have to use the
solution David mentioned.
Thank you Frank. This is the solution I had ended up with, which does work, but really it is as I guessed, and there is no automatic way. -
Hi all,
How shud i create class interface.
Does this have an impact with the activation of program in sicf txn.
basically my problem is i did not create a class interface or implement it.
when i go into sicf txn i cant my program.
please help me out.
Regards,
varunVadnala,
Go to SE24 to create your class interface and take a look at the tutorials we have spread in the SAP help and SDN. Take a quick look at BSP aplications SBSPEXT_*.
Regards,
Alexandre
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