import java.io.IOException;
import java.io.Closeable;//len java 1.5 a vyssie verzie!!!
public class DemoCloseable implements Closeable {
  public DemoCloseable() {
  }
  public void close() throws IOException{
    System.out.println("closing");
  }
  public static void main(String[] args) throws IOException {
    // main sluzi len na ukazky pouzitia
    DemoCloseable demo = new DemoCloseable();
    demo.close();
    Closeable demo1 = new DemoCloseable();
    demo1.close();
  }
}