@Retention(value=RUNTIME) @Target(value={FIELD,METHOD,PARAMETER}) public @interface XmlList
Usage
The @XmlList annotation can be used with the following program elements:
When a collection property is annotated just with @XmlElement, each item in the collection will be wrapped by an element. For example,
 @XmlRootElement
 class Foo {
     @XmlElement
     List<String> data;
 }
 
 would produce XML like this:
 <foo> <data>abc <data>def </foo>@XmlList annotation, on the other hand, allows multiple values to be represented as whitespace-separated tokens in a single element. For example,
 @XmlRootElement
 class Foo {
     @XmlElement
     @XmlList
     List<String> data;
 }
 
 the above code will produce XML like this:
 <foo> <data>abc def </foo>
This annotation can be used with the following annotations:
        XmlElement,
        XmlAttribute,
        XmlValue,
        XmlIDREF.
  
XmlValue while
         allowed, is redundant since  XmlList maps a
         collection type to a simple schema type that derives by
         list just as XmlValue would. XmlAttribute while
         allowed, is redundant since  XmlList maps a
         collection type to a simple schema type that derives by
         list just as XmlAttribute would.  Submit a bug or feature 
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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