Question

The following code:

UnsortedReadableList collection = new UnsortedReadableList();
Vector messages = new Vector();

// ApplicationMessageImpl is simple implementation of 
// net.rim.blackberry.api.messagelist.ApplicationMessage interface
messages.addElement(new ApplicationMessageImpl("bla-bla"));
collection.loadFrom(messages);

produce IllegalArgumentException

Can someone help me to understand why? I can’t see any details in exception

Update

Answer 1

The UnsortedReadableList.loadFrom()‘s JavaDoc states about the collection parameter:

collection – New contents for this list; should be a ReadableSet, a
ReadableList, an Object array, or an Enumeration.

The Vector you’re providing as the parameter however isn’t one of the mentioned types. Vector.toArray() however does provide an Object[]. Therefore, I would try the following:

UnsortedReadableList collection = new UnsortedReadableList();
Vector messages = new Vector();

// ApplicationMessageImpl is simple implementation of 
// net.rim.blackberry.api.messagelist.ApplicationMessage interface
messages.addElement(new ApplicationMessageImpl("bla-bla"));
Object[] messageArray = new Object[messages.size()];
messages.copyInto(messageArray));
collection.loadFrom(messageArray);