ClassCastException error problem

Question

Hi all,
I am relatively new to java and confused with the following problem. The below code compilers but returns a ClassCastException error when run.
private List<TableOne> query = new ArrayList<TableOne>();
       private TableTwo tableTwo;
//create an array of values
        for (Double value : array) {
          query = ..result from sql query (needs to be list using hibernate)
         for (TableOne queryValue :  query ) {
         //something
public List<TableOne> getTableOne() {
        return query;
    public List getQuery()
        return this.Query;
           The ClassCastException error occurs on the second for loop? Is this because the wo objects are not of the same type? Any suggetions would be great, thanks in advance

Answer 1

Hi,
look, List<TableOne> should mean that You have a list of TableOne objects. It seems like logic mistake. In addition, You are already have instance of query why do You need to assign it once more?
Now about ex. You sayed it is in the second loop and put almost nothing there. It seems like You have a mistake in //something ;)