How to use

getKey

method

in

org.jfree.ui.KeyedComboBoxModel$ComboBoxItemPair

/**
 * Searches an element by its data value. This method is called by the
 * setSelectedItem method and returns the first occurence of the element.
 *
 * @param anItem the item
 * @return the index of the item or -1 if not found.
 */
private int findDataElementIndex(final Object anItem)
{
 if (anItem == null)
 {
  throw new NullPointerException("Item to find must not be null");
 }
 for (int i = 0; i < this.data.size(); i++)
 {
  final ComboBoxItemPair datacon = (ComboBoxItemPair) this.data.get(i);
  if (anItem.equals(datacon.getKey()))
  {
   return i;
  }
 }
 return -1;
}

/**
 * Searches an element by its data value. This method is called by the
 * setSelectedItem method and returns the first occurence of the element.
 *
 * @param anItem the item
 * @return the index of the item or -1 if not found.
 */
private int findDataElementIndex(final Object anItem)
{
 if (anItem == null)
 {
  throw new NullPointerException("Item to find must not be null");
 }
 for (int i = 0; i < this.data.size(); i++)
 {
  final ComboBoxItemPair datacon = (ComboBoxItemPair) this.data.get(i);
  if (anItem.equals(datacon.getKey()))
  {
   return i;
  }
 }
 return -1;
}

/**
 * Searches an element by its data value. This method is called by the
 * setSelectedItem method and returns the first occurence of the element.
 *
 * @param anItem the item
 * @return the index of the item or -1 if not found.
 */
private int findDataElementIndex(final Object anItem)
{
 if (anItem == null)
 {
  throw new NullPointerException("Item to find must not be null");
 }
 for (int i = 0; i < data.size(); i++)
 {
  final ComboBoxItemPair datacon = (ComboBoxItemPair) data.get(i);
  if (anItem.equals(datacon.getKey()))
  {
   return i;
  }
 }
 return -1;
}

/**
 * Returns the key from the given index.
 *
 * @param index the index of the key.
 * @return the the key at the specified index.
 */
public Object getKeyAt(final int index)
{
 if (index >= data.size())
 {
  return null;
 }
 if (index < 0)
 {
  return null;
 }
 final ComboBoxItemPair datacon = (ComboBoxItemPair) data.get(index);
 if (datacon == null)
 {
  return null;
 }
 return datacon.getKey();
}

/**
 * Returns the key from the given index.
 *
 * @param index the index of the key.
 * @return the the key at the specified index.
 */
public Object getKeyAt(final int index)
{
 if (index >= this.data.size())
 {
  return null;
 }
 if (index < 0)
 {
  return null;
 }
 final ComboBoxItemPair datacon = (ComboBoxItemPair) this.data.get(index);
 if (datacon == null)
 {
  return null;
 }
 return datacon.getKey();
}

/**
 * Returns the key from the given index.
 *
 * @param index the index of the key.
 * @return the the key at the specified index.
 */
public Object getKeyAt(final int index)
{
 if (index >= this.data.size())
 {
  return null;
 }
 if (index < 0)
 {
  return null;
 }
 final ComboBoxItemPair datacon = (ComboBoxItemPair) this.data.get(index);
 if (datacon == null)
 {
  return null;
 }
 return datacon.getKey();
}