import java.awt.*;

public class ShowDevices {
  public static void main(String[] args) {
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice[] screenDevices = ge.getScreenDevices();
    for (int i = 0; i < screenDevices.length; i++)
      System.out.println(screenDevices[i].getIDstring());
    System.exit(0);
  }
}