[jdom-interest] Element.addContent won't accept String in Collection

[Syloke Soong]

JDOM javadoc says,

[javadoc]
Element addContent(java.util.Collection collection) 
Appends all children in the given collection to the end of the content
list.

Element addContent(int index, java.util.Collection c) 
Inserts the content in a collection into the content list at the given
index.

Element addContent(java.lang.String str) 
This adds text content to this element.
[/javadoc]

Since you could add individual String, I presumed no harm would come my
way if String objects are included in the collection argument.

But no, I had a Vector with a String object and addContent(collection)
rejected the vector due to ...

org.jdom.IllegalAddException: Class java.lang.String is of unrecognized
type and cannot be added
	org.jdom.ContentList.add(ContentList.java:142)
	org.jdom.ContentList.addAll(ContentList.java:292)
	org.jdom.ContentList.clearAndSet(ContentList.java:338)
	org.jdom.Element.setContent(Element.java:742)


Hrrrmmmmpppphhhhhhhh .... !

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