Object[] javax.swing.JList.getSelectedValues()
    getSelectedValues
    @Deprecated
    public Object[] getSelectedValues()
    Deprecated. As of JDK 1.7, replaced by getSelectedValuesList()
    Returns an array of all the selected values, in increasing order based on their indices in the list.
    Returns:
    the selected values, or an empty array if nothing is selected
    See Also:
    isSelectedIndex(int), getModel(), addListSelectionListener(javax.swing.event.ListSelectionListener)

private         JList       LeftList    =   new JList();
    private         JList       RightList   =   new JList();
    private         JButton     Move        =   new JButton("Move -->");

    private static  String[]    Items       =   {"Item 1", "Item 2","Item 3","Item 4","Item 5"};

rightList.setListData(leftList.getSelectedValuesList().toArray());