Help with vector problem

Hi,

We get an java.lang.ArrayIndexOutOfBoundsException: Array index out of
range: 1 on the following line:

Object tmp = moDataTable.get(i + 1);
The following trace:

System.out.println("MAX:moDataTable is empty");

does not show on the console so it is not empty and it should not enter
the loop.

Any ideas what could be wrong?

cheers,

//mikael

My code:

private Vector moDataTable;

public synchronized void add(Object moData) {
         if ((moData != null) && (moData instanceof MoData)) {
             for (int i = 0; i < moDataTable.size(); i++) {
                 if (moDataTable.isEmpty()) {
                     System.out.println("MAX:moDataTable is empty");
                 }

                 Object tmp = moDataTable.get(i + 1);

                 if (tmp instanceof MoData) {
                     if (((MoData)
tmp).getLocalDistinguishedName().equals(((MoData)
 
         moData)
 
    .getLocalDistinguishedName())) {
                         System.out.println("WARNING!!: there was
attempt to add MoData with duplicate LDN, ignoring, "
                                            + ((MoData) moData)
                                            .getLocalDistinguishedName());
                         return;
                     }
                 }
             }
         }
}