String id_tile;
int zoomLvl;
int x;
int y;
byte[] imageInByte;
String id_photo;
DataLoader dat = new DataLoader();

private boolean available = false;

public synchronized void get() throws IOException, SQLException {

    while (available == false) {
        try {
            wait();
        } catch (InterruptedException e) {
        }
    }
    // метод, который записывает в БД (должен записывать)
    dat.insertToTiles(id_tile, zoomLvl, x, y, imageInByte, id_photo);

    available = false;
    notifyAll();
}

public synchronized void put(String id_tile, int zoomLvl, int i, int j, byte[] imageInByte, String id_photo)
        throws IOException {
    while (available == true) {
        try {
            wait();
        } catch (InterruptedException e) {
        }
    }

    this.id_tile = id_tile;
    this.zoomLvl = zoomLvl;
    this.x = i;
    this.y = j;
    this.id_photo = id_photo;
    this.imageInByte = imageInByte;

    available = true;
    notifyAll();
}