Java meno imperativo, un poco più funzionale. Aspettando Java 8. Riferimenti: http://www.perhammer.com/2008/07/java-initialising-complex-types-at.html

JavaInitialising.java

public class JavaInitialising {

  public static void main(String[] args) {

    String[] anArray = {"One", "Two", "Three"};

    List<String> aList = Arrays.asList( 
            new String[]{"One", "Two", "Three"} 
    );
    
    Map<String, String> aMap = new HashMap<String, String>() {
       {
           put("One", "1");
           put("Two", "2");
           put("Three", "3");
       }
    };
   
    Set<String> aSet = new HashSet<String>() {
       {
           add("One");
           add("Two");
           add("Three");
       }
   };
   
   List<String> anotherList = new Vector<String>() {
       {
           add("One");
           add("Two");
           add("Three");
       }
   };
   
    
  }

}