public CarController(String carIDFilename,
                      String carVINFilename,
                      String heapFilename)
 {
     IDCarTree   = new BTree <AddressedID>(carIDFilename);
     VINCarTree  = new BTree <AddressedID>(carVINFilename);
     CarHeapFile = new HeapFile <Vehicle>(heapFilename);
 }
 public CarController(String carIDFilename, int carIDRecordsCountPerBlock,
                      String carVINFilename, int carVINRecordsCountPerBlock,
                      String heapFilename, int heapfileRecordsCountPerBlock
                      )
 {
     IDCarTree   = new BTree <AddressedID>(carIDRecordsCountPerBlock, carIDFilename);
     VINCarTree  = new BTree <AddressedID>(carVINRecordsCountPerBlock, carVINFilename);
     CarHeapFile = new HeapFile <Vehicle>(heapfileRecordsCountPerBlock, heapFilename);
 }