Array of Objects

Hey All!

I need to make an array of objects ( of a class i created). I

Below is some of the code. I want to make an array, parsedInfo, of objects from the class ParsedSiteInfo. In a function not shown, I have a for-loop that calls the function createNewSite(). So the array needs to be able to grow dynamically.

Code:

---

    private ParsedSiteInfo[] parsedInfo;
    private int sites = 0;
   
    private void createNewSite()
            parsedInfo[sites] = new ParsedSiteInfo();
            sites++;
    }

---

I ran this code with some debug print statements and determine the program as a problem with this line:

Code:

---

parsedInfo[sites] = new ParsedSiteInfo();

---

I just tried the following code as a change. I wasnt putting "this" in front of variables. My code shown is part of a class ( public class ExampleHandler extends DefaultHandler{ )

Code:

---

    private ParsedSiteInfo[] parsedInfo;
    private int sites = 0;

    private void createNewSite() {
            this.parsedInfo[this.sites] = new ParsedSiteInfo();
            this.sites++;
    }

---

Still doesnt work :(

Hello bluefloyd8

Arrays are not dynamic data structures and you cannot make them (that easily). You need to specify their size before you use them. Your compiler probably gave you a null pointer exception, right? So change you code to:

Code:

---

    [B]public static final int structureSizeLimit = 10000;[/B]
    private ParsedSiteInfo[] parsedInfo[B] = new ParsedSiteInfo[structureSizeLimit];[/B]
    private int sites = 0;

    private void createNewSite() {
            this.parsedInfo[this.sites] = new ParsedSiteInfo();
            this.sites++;
    }

---

Remember to check this limit each time you try to add elements. See this tutorial on vectors and other dynamic data structures.

Good luck. :D

is it necessary to use arrays in your code ...
You can still use LinkedList

Hello bluefloyd8

Array is not a dynamic data structures.
Instead of using an Array ... u can use ArrayList which is dynamic .. u dont have to worry about the size increment .. tht will be taken care.
This should work for you .......


ArrayList<ParsedSiteInfo> parsedInfo = new ArrayList<ParsedSiteInfo>();
private void createNewSite(){
this.parsedInfo.add(new ParsedSiteInfo());
}

Cool guys, thanks. Ill look into using the ArrayList. I needs to be dynamic because memory management is important.