67     @Override public void clearSelection() {
  68         updateSelectedIndex(-1);
  69     }
  70 
  71     /**
  72      * Clears the selection of the given index, if it is currently selected.
  73      */
  74     @Override public void clearSelection(int index) {
  75         if (getSelectedIndex() == index) {
  76             clearSelection();
  77         }
  78     }
  79 
  80     /** {@inheritDoc} */
  81     @Override public boolean isEmpty() {
  82         return getItemCount() == 0 || getSelectedIndex() == -1;
  83     }
  84 
  85     /**
  86      * <p>This method will return true if the given index is the currently
  87      * selected index in this SingleSelectionModel.</code>.
  88      *
  89      * @param index The index to check as to whether it is currently selected
  90      *      or not.
  91      * @return True if the given index is selected, false otherwise.
  92      */
  93     @Override public boolean isSelected(int index) {
  94         return getSelectedIndex() == index;
  95     }
  96 
  97     /**
  98      * In the SingleSelectionModel, this method is functionally equivalent to
  99      * calling <code>select(index)</code>, as only one selection is allowed at
 100      * a time.
 101      */
 102     @Override public void clearAndSelect(int index) {
 103         select(index);
 104     }
 105 
 106     /**
 107      * Selects the index for the first instance of given object in the underlying

  67     @Override public void clearSelection() {
  68         updateSelectedIndex(-1);
  69     }
  70 
  71     /**
  72      * Clears the selection of the given index, if it is currently selected.
  73      */
  74     @Override public void clearSelection(int index) {
  75         if (getSelectedIndex() == index) {
  76             clearSelection();
  77         }
  78     }
  79 
  80     /** {@inheritDoc} */
  81     @Override public boolean isEmpty() {
  82         return getItemCount() == 0 || getSelectedIndex() == -1;
  83     }
  84 
  85     /**
  86      * <p>This method will return true if the given index is the currently
  87      * selected index in this SingleSelectionModel.
  88      *
  89      * @param index The index to check as to whether it is currently selected
  90      *      or not.
  91      * @return True if the given index is selected, false otherwise.
  92      */
  93     @Override public boolean isSelected(int index) {
  94         return getSelectedIndex() == index;
  95     }
  96 
  97     /**
  98      * In the SingleSelectionModel, this method is functionally equivalent to
  99      * calling <code>select(index)</code>, as only one selection is allowed at
 100      * a time.
 101      */
 102     @Override public void clearAndSelect(int index) {
 103         select(index);
 104     }
 105 
 106     /**
 107      * Selects the index for the first instance of given object in the underlying