ClassCastException

[soldierdackel]

Hi people,

I'm new to Java and therefore seek "professional" help. Try to take a look at below code:

DocumentAbbrMap d;
for (int i=0; i < arrayList.size(); i++) {
d = (DocumentAbbrMap) arrayList.get(i);
}

For some strange reason I get a ClassCastException when I do the above. I tried using Vector with the same result.

I also made sure that the ArrayList was actually populated with instances of type DocumentAbbrMap.

I don't get the exception if I add Objects to the ArrayList.

Please, anyone?

 

[sedj]

Check what is actually in the ArrayList by doing :

for (int i=0; i < arrayList.size(); i++) {
String className = arrayList.get(i).getClass().getName();
System.err.println(className);
}

 

[Cagliostro]

Object o = arrayList.get(i)
d = null;
if(d instanceof DocumentAbbrMap)
d = (DocumentAbbrMap)o;

Ion Filipski

 

[soldierdackel]

Hi all,

It's all my mistake. For some strange reason I placed the class DocumentAbbrMap in two different packages. One of them was added to the ArrayList, and the other one was retrieved from the ArrayList.

Stupid stupid!

Cheers