First, this list is for Struts issues, not a general Java programming
help. That said, here's a quick response:
Modifying an Iterator while iterating it is not guaranteed to work. It
depends on the specific Iterator implementation. This is clearly
documented in the Javadoc for the Collections APIs, so read those to
find out if what you are doing is safe.
The general solution would be to take a copy of the iterator, iterate
the copy and modify the original (or vica versa).
L.
temp temp wrote:
How can I iterate a collection and modify at the same time ?
Example
public static Collection getAncestors(
Entity aEntity, Object aContext ){
Collection vAncestors=new ArrayList();
IDocument vDocument= findDocumentByName(
aEntity.getSuper(), aContext);
vAncestors.add(vDocument);
for(
Iterator i=vAncestors.iterator();
i.hasNext();
){
getAncestors(vAncestors,
(IDocument)i.next(), aContext);
}
return vAncestors;
}
public static void getAncestors(
Collection aAncestors,
IDocument aDocument ,
Object aContext){
Entity vEntity=(Entity)aDocument.get();
if(vEntity.getSuper()!=null){
IDocument vDocument= findDocumentByName(
vEntity.getSuper(),
aContext);
aAncestors.add(vDocument);
}
}
Thanks
Miro
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