Unchecked conversion Warnings!!

Question

1. how do i get rid of these unchecked conversion warning for
List<Element> children = new ArrayList<Element>(element.getChildren( "result" ));
where element.getChildren( "result" ) returns a list of Elements.
warning is :
warning: [unchecked] unchecked conversion
found : java.util.List
required: java.util.Collection<? extends org.jdom.Element>
List<Element> children = new ArrayList<Element>(element.getChildren( "result"
2. warning: [deprecation] setIndent(java.lang.String) in org.jdom.output.XMLOutputter has been deprecated
output.setIndent(" ");

Answer 1

1. The message is correct, your code is not safe
The problem is that getChildren returns List not List<Element>. Do you understand the diference? how can a List of an especified type (Element) be created on a List that accepts everything?
This will solve your problem:
//most obvious way to do it
List<Element> children = new ArrayList<Element>();
for (Iterator i = element.getChildren( "result" ).iterator(); i.hasNext();){
    children.add((Element) i.next()); //may throw class cast exception
}Do you get the comment about class cast exception? I sugest reading the Generics Tutorial that comes with the jdk documentation.
2 The method is deprecated, this means it is there but not supported (This is the java way : -) Go to the API for the reason...
I did that for you and the method does not even exist anymore, try updating to version 1.0 .