java.lang.reflect.InvocationTargetException in Java

Question

if(locs!=null)
{
    System.out.println("location are not null");
    Iterator ite = locs.iterator();
    DefaultComboItem locObj = null;
    ArrayList locCode = null;
    String cod=null;
    String name=null;
    while(ite.hasNext())
    {
        locCode = (ArrayList) ite.next();
        Iterator iter = locCode.iterator();
        while(iter.hasNext())
        {
            cod=(String)iter.next();
            System.out.println("Code="+cod);
            name=(String)iter.next();
            System.out.println("name="+name);
            locObj = new DefaultComboItem(cod, name);
            colRet.add(locObj);
        }
    }

}

on executing above code i am getting "java.lang.reflect.InvocationTargetException" getting this exception on cod=(String)iter.next(); line, because iter.next(); returns bigDecimal value and i am converting into String variable

Please help me

Probably a good example on how not to ask a question. Can you provide context? Which libraries are you using, which line did the exception occurred on, stack trace? — David Soroko
– David Soroko, Commented May 27, 2010 at 10:00

Edward Dale · Accepted Answer · 2010-05-27 10:03:23Z

3

You're calling next() twice, but only checking hasNext() once in the while loop condition. If your list has an odd number of elements, this code will throw a NoSuchElementException, which may be getting wrapped in an InvocationTargetException somewhere.

answered May 27, 2010 at 10:03

Edward Dale

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Comments

Andrei Fierbinteanu · Accepted Answer · 2010-05-27 10:05:11Z

2

You can't cast a BigDecimal directly to String. Try iter.next().toString() instead.

Also it would be a good idea to use generics on the Iterators since it makes it clearer what they return (and you can access the specific methods of that class directly (no cast needed)).

answered May 27, 2010 at 10:05

Andrei Fierbinteanu

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