Populating an array of objects with a loop. Noob PHP question.

Hey guys,
 You are all such a great help! Here is another one for you, the simple code below should create an array of pizza objects (and it does) then display each object in order. However... for some reason each object in the array seems to inherit the properties of whatever the last object entered was.
This code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<?php
class pizza{
 public $price;
 public $description;
 public $name;
$menu2=fopen("pizzaMenu2.txt","r") or exit("System Error!");
$pizzas = array();
$arraypos=0;
//This loop does all of the READING and populating of variables
while(!feof($menu2))
 //First get the array position
 $arraypos = (int)fgets($menu2);
 //Then Put in Title in title2 array
 $pizzas[$arraypos2] = new pizza(0,0,0);
 $pizzas[$arraypos2]->title = fgets($menu2);
 $pizzas[$arraypos2]->description = fgets($menu2);
 $pizzas[$arraypos2]->price = fgets($menu2);
} //End of reading loop
//begin writing data
$arraypos=1;
while ($arraypos <=3){
 echo "the array is in position: ".$arraypos;
 echo " ";
 echo $pizzas[$arraypos2]->title;
 echo " ";
 echo $pizzas[$arraypos2]->description;
 echo " ";
 echo $pizzas[$arraypos2]->price;
 echo " ";
 $arraypos++;
}//end of writing data loop
fclose($menu2);
?>
<body>
</body>
</html>
returns this:
the array is in position: 1
Test Pizza Two
The same as one with an extra one, yum!
22.99
the array is in position: 2
Test Pizza Two
The same as one with an extra one, yum!
22.99
the array is in position: 3
Test Pizza Two
The same as one with an extra one, yum!
22.99
when it should return this:
the array is in position: 1
Test pizza One
Loaded with all that test pizza goodness! Lots and lots of ones 1111!
11.99
the array is in position: 2
Test Pizza Two
The same as one with an extra one, yum!
22.99
the array is in position: 3
Test Threeza!
Do you see what I did there? I added a three to pizza, hahaha, I am so punny.
33.33
using the following text file pizzaMenu2.txt:
1
Test pizza One
Loaded with all that test pizza goodness! Lots and lots of ones 1111!
11.99
3
Test Threeza!
Do you see what I did there? I added a three to pizza, hahaha, I am so punny.
33.33
2
Test Pizza Two
The same as one with an extra one, yum!
22.99
Now, I have done line by line testing and shown that the values are being entered into the proper objects in the proper array, but whatever goes in last overwrites all of the other objects, so in the end I have 3 objects in my array that are all the same. I am not sure what I am missing here.

Christ-Guard wrote:
Thanks! I majored in computer science
That helps enormously.
Christ-Guard wrote:
Also, I have never worked a CS job before and I've been out of school for 8 years, so I am better at remembering "This should work" then I am at "This is how I write this code".
If you have a good idea something should work, based on theory, then that's half the battle.
Its having no knowledge if something will work or not when it becomes a problem.

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Trouble creating and populating an array of objects.

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Hey JavaMan5,
That did do the trick! Thanks for the assistance. I was able to compile and run the program after adding my sorting routine. Do you happen to see anything I can do to clean it up further, or does it look ok? Thanks again,
Ironjay69
public class SortSalon
 public static void main(String[ ] args) throws Exception
 HairSalon [] sal = new HairSalon[6];
 char selection;
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New here, trying to figure this out.
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^
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You need to put operations inside of a method instead of just floating them around inside the top-level of your Cube class. The errors you are getting are related to the fact that only class data members or methods are supposed to be inside the top-level of a class definition.
Something like this should get you started:
class Cube{
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}Regards,
-MF

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catch (ClassNotFoundException c) {}DO NOT swallow exceptions. At the very least put in a call to printStackTrace so you know if/when an exception occurs.
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Step by step, how did you arrive at seeing this agreement?

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Chris Simms
[email protected]
null

Before 9i, you will have to first insert empty locators using EMPTY_CLOB() inlined in the SQL and using RETURNING clause to return the locator. Then use OCILobWrite to write to the locators in a streamed fashion.
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<BLOCKQUOTE>quote:<HR>Originally posted by CSimms:
Hi all,
I have a question about Oracle 8i array DML operations with LOB objects, both CLOB and BLOB. With the following statement in mind:
INSERT INTO TABLEX (COL1, COL2) VALUES (:1, :2)
where COL1 is a NUMBER and COL2 is a BLOB, I want to use OCIs array DML functionality to insert multiple records with a single statement execution. I have allocated an array of LOB locators, initialized them with OCIDescriptorAlloc(), and bound them to COL2 where mode is set to OCI_DATA_AT_EXEC and dty (IN) is set to SQLT_BLOB. It is after this where I am getting confused.
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As you can see, the correct method has evaded me. I have looked through the OCI LOB samples, but have not found any code that helps answer my question. Oracles OCI documentation has not been of much help either. So if anyone could offer some insight I would greatly appreciate it.
Chris Simms
[email protected]
<HR></BLOCKQUOTE>
null

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Attachments:
Array test.vi ‏19 KB

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Array test 2.vi ‏19 KB

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Message was edited by:
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Sorry. Obvious answer:
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I am using the struts ActionForm and need to know how to display an Array of objects. I am assuming it would look like this in the ActionForm:
private AddRmvParts addRmv[];
But I am not sure how the getter and setter in the ActionForm should look. Should it be a Collection or an Iterator?
I am thinking I need to use an iterator in the jsp page to display it.
I am also wondering if the AddRmvParts class I have can be the same class that gets populated by the retrieval of data from the database. This class has 10 fields that need to display on the jsp page in 1 row and then multiple rows of these 10 fields.
Thanks.

Most probably the easiest way to make it accessible in your page is as a collection.
ie
public Collection getAddRmvParts()
You can use the <logic:iterate> or a <c:forEach>(JSTL) tag to loop through the collection
As long as the individual items in the collection provide get/set methods you can access them with the dot syntax:
Example using JSTL:
<c:forEach var="addRmvPart" items="${addRmvParts}">
<c:out value="${addRmvPart.id} ${addRmvPart.name} ${addRmvPart.description}"/>
</c:forEach>

An array of objects

Hi,
I'm having trouble creating an array of objects to store data I'm reading in from a text file.
I have created a class called mssg, and as I read each line of the textfile in, I've created a method called setMsg that I'm using to populate the mssg object I've created.
This works fine when I use this method on a single instance of a mssg object, but when I try to use the same code on a mssg object that's part of an array, I get an exception (and one that doesn't have any friendly error text)
mssg ms = new mssg(); //this works as expected
mssg msgs[] = new mssg [msgCounter]; //I believe the exception relates to how I'm declaring the array of objects here, but the exception doesn't occur until I try to assign data to an element of the arrayThe lines below are where the problem becomes apparent. The first object 'ms' gets assigned its values as I'd expect, however, the line below that tries to assign values to a mssg object in the msgs array, and I get an exception immediately.
ms.setMsg(currMsg,mDt,mTm,mDir,mData);
msgs[currMsg].setMsg(currMsg,mDt,mTm,mDir,mData);Can anyone tell me what I'm doing wrong in terms of declaring/assigning values to an array of objects?

It's the following error: java.lang.NullPointerException
Full error text if I take my code out of a try/catch loop is:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
        at FIXparserUI.jMenuLoadActionPerformed(FIXparserUI.java:301)
        at FIXparserUI.access$100(FIXparserUI.java:20)
        at FIXparserUI$3.actionPerformed(FIXparserUI.java:129)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
        at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
        at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1170)
        at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1211)
        at java.awt.Component.processMouseEvent(Component.java:6038)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3260)
        at java.awt.Component.processEvent(Component.java:5803)
        at java.awt.Container.processEvent(Container.java:2058)
        at java.awt.Component.dispatchEventImpl(Component.java:4410)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3986)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916)
        at java.awt.Container.dispatchEventImpl(Container.java:2102)
        at java.awt.Window.dispatchEventImpl(Window.java:2429)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)at the point that the following line of code is run:
msgs[currMsg].setMsg(currMsg,mDt,mTm,mDir,mData);msgCounter is used to count the number of lines in the file (about 2300)
I had hoped that what I was doing with this line:
mssg msgs[] = new mssg [msgCounter];was create 2300 empty mssg records, ready to be populated from each line of data, however I have the feeling you're going to tell me I'm wrong.

Problem with a loop

Hello All
I'm working on a Flash Gallery and I'm having some issues
with a loop and it's probably something simple I don't know so I
thought I'd see if someone can help me.
the problem is that once the thumbnail panel is populated the
image I want to display from a rollover is no longer defined. As I
mentioned I was hoping someone could shed some light on this.
[code]
// create the thumbnail panel
var i = -1;
while(++i<thumbList.length) {
name = "item"+i;
thumbs_mc.duplicateMovieClip(name,i);
this[name]._x = i*spacing;
this[name].contentPath = "children/" + thumbList
// show the larger pic on rollover
this[name].onRollOver = function() {
picture.contentPath = "children/" + thumblist;
[/code]
by using this I get an error of: "error opening
URL...undefined"

mark2685 wrote:
Well, the array of student objects is larger than 2, there are about 6 students so it would have to get the highest from TestScore 1 and the lowests from TestScore 2 out of all of the students, not just those 2. And I want the entire object stored in the chessTeam array. Does this make sense?No you're not reading my code right (BTW - add an open brace on the for loop top and set score2 to 101), or else I'm not understanding you requirements correctly. The student array can hold as many Students as needs be. You stated that you have only two scores that you care about and so that's the 1 and the 2. Based on the Student class you've shown us, this should work, but you'll have to try it before you know.

Populating an array of objects with a loop. Noob PHP question.

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