Re: How to loop through a list while inside the loop, the list size
may be decreased?
www wrote:
Hi,
I have a List containing Person objects. I am going through the list
using a for loop. Inside the loop, I check each Person obj, if he/she
disqualifies, I want to delete the object from the list.
I found that the for loop always run into out of index exception,
because the list size is gradually decreased, but the for loop
"remembers" the original size.
for(int i=0; i < list.size(); i++)
{
if(..) //check
{
list.get(i).remove(i); //this decreases the number of objects
in list, correct?
}
}
Thank you very much.
The iterator is the way to go but to follow your method:
import java.util.*;
public class test99 {
public static void main(String[] args) {
List list = new ArrayList();
list.add("one");
list.add("two");
list.add("three");
list.add("four");
list.add("five");
int n = 0;
while (n < list.size()) {
String str = (String)list.get(n);
if (str.equals("three"))
list.remove(n);
else
++n;
}
for (int i=0; i<list.size(); i++)
System.out.println(list.get(i));
}
}
--
Knute Johnson
email s/nospam/knute2008/
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