Need some help regarding arraylist

[Chethan Sharma]

Hi,

ArrayList arrL = new ArrayList();
ArrayList tmpArrL = new ArrayList();

for (int i = 0; i < size; i++) {
Character ch = new Character(text.charAt(i));
arrL.add(ch);
}
tmpArrL = arrL;
------;
------;
String newText = "";
for (int i = 0; i < arrL.size(); i++) {
newText += tmpArrL.get(i);
}
return newText;

In some cases the arraylist contains around 500000 characters. in this situtation tool gets hanged and it takes alot of time to execute the for loop.

Please let me know how to handle this situation.

Thanks,

[Anay Nayak]

How about using StringBuffer instead of String for the concatenation?

[Ray Stojonic]

What is text (re: text.charAt(i))? It would appear to be a String, why would you need to parse a String into Characters, load them into an ArrayList then concatenate them all into to a String?

[Naseem Khan]

Originally posted by Chethan Sharma:
In some cases the arraylist contains around 500000 characters. in this situtation tool gets hanged and it takes alot of time to execute the for loop.

Please let me know how to handle this situation.

Thanks,

500000 number of characters in a String and processing it by a for loop

What exactly is the source of this much number of characters? Is it from some file or from some socket you read that much characters?

Naseem
[ September 09, 2006: Message edited by: Naseem Khan ]

[Garrett Rowe]

I agree with Ray, what exactly are you trying to accomplish here?

[Anay Nayak]

I guess Chetan gets the input in the form of a List of Character objects and the initial part of the code was just to create a dummy example?

[Chethan Sharma]

Thanks alot.

I solved the problem using string buffer