generics 1.4

[rohit kumar]

import java.util.*;
public class List_Test{
public static void main(String[] args) {
List ints = Arrays.asList(new Integer[] {new Integer(1), new Integer(2), 
 
new Integer(3)});
int s = 0;
Iterator it;
for( it = ints.iterator(); it.hasNext(); ) {
int n = ((Integer)it.next()).intValue();
s+=n;
}
if(s==6)
System.out.println(s);
int var=4;
ints.add(new Integer(4));
s = 0;
for( it = ints.iterator(); it.hasNext(); ) {
int n = ((Integer)it.next()).intValue();
s+=n;
}
if(s==10)
System.out.println(s);

}
}

I am getting a runtime error. PLs help

[Keith Lynn]

When you create a List using asList, the size is fixed.

[Burkhard Hassel]

That's because the list is backed by the array, and arrays can't change their size.

But you could make a copy of the list returned by the asList method using
List ints = new ArrayList(
Arrays.asList(new Integer[] {new Integer(1), new Integer(2), new Integer(3)})
);

Then you'll have your six and ten.


By the way, wouldn't be "The Six and Ten" a nice name for a pub?
Bu.