RemovalListener Arayüzü

onRemoval metodu
Örnek
Şöyle yaparız.

CacheLoader<Key, DatabaseConnection> loader = new CacheLoader<Key,DatabaseConnection> (){
  public DatabaseConnection load(Key key) throws Exception {
    return openConnection(key);
  }
};
RemovalListener<Key, DatabaseConnection> removalListener = new
  RemovalListener<Key,DatabaseConnection>() {
    public void onRemoval(RemovalNotification<Key, DatabaseConnection> removal) {
      DatabaseConnection conn = removal.getValue();
      conn.close(); // tear down properly
    }
};

return CacheBuilder.newBuilder()
  .expireAfterWrite(2, TimeUnit.MINUTES)
  .removalListener(removalListener)
  .build(loader);

Örnek
Şöyle yaparız

CacheBuilder.newBuilder().maximumSize(250)
  .expireAfterWrite(15, TimeUnit.SECONDS)
  .removalListener(new RemovalListener<String, Path>(){

    @Override
    public void onRemoval(RemovalNotification<String, Path> notification){
      deleteTemporaryFile(notification.getValue());
    }
}).build();