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Index › Programming Questions & Help › Syntax Questions › How to fill an array
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How to fill an array? (Read 851 times)
i4ni
How to fill an array?
Nov 6th, 2006, 4:41pm  
Hello!

I want to fill an array with the resalts from an Web-Service call.  I miss an Method like array.add.
How can I do this?

Best regards Hans
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JohnG
Re: How to fill an array?
Reply #1 - Nov 6th, 2006, 5:46pm  
The following pseudo code should help you:

To add a single new element to an existing array:
MyArray=(MyArrayType[])append(MyArray,MyNewElement);

To add an array onto the end of another:
MyArray=(MyArrayType[])concat(MyArray,MyOtherArray);
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Daniel Shiffman
Re: How to fill an array?
Reply #2 - Nov 7th, 2006, 3:33pm  
You might also look into using an ArrayList.

http://java.sun.com/j2se/1.4.2/docs/api/java/util/ArrayList.html

Some example code:

Code:

// Declaring the arraylist
ArrayList plist = new ArrayList() ;

// Adding 100 Particle objects
for (int i = 0; i < 100; i++) {
  plist.add(new Particle()) ;
}

// Iterating the arraylist
for (int i = 0; i < plist.size() ; i++) {
  Particle p = (Particle) plist.get(i) ;
  p.doStuff() ;
}
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http://www.learningprocessing.com | http://www.shiffman.net | http://itp.nyu.edu
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i4ni
Re: How to fill an array?
Reply #3 - Nov 7th, 2006, 7:13pm  
Hello JohnG and shiffman,

thank you for your responses.
I try this from the Reference:
String[] pListe = new String[200];// I define the size? I dont now yet however big my array lake at the end. Can I made this more flexible?

String pListe[]=append(pListe,board.amazon.getProductName());

I become the error message:
The variable "pListe" may be accessed here before having definitley assigned a value

What do I wrong?

Dear Shiftman, I don't now how to use Java in processing. Is this possible? I think that only the code from the reference work.
Please excuse my English...

Hans
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JohnG
Re: How to fill an array?
Reply #4 - Nov 7th, 2006, 7:59pm  
This should work, however I've not used the switchboard stuff, so I'm just copying your code for that part.

Code:
String[] pListe;

void setup()
{
  pListe=new String[0]; // starts at 0, append makes it bigger
  pListe=(String[])append(pListe,board.amazon.getProductName());
}


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