多屏显示器

package b;

import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;

public class Main {

	public static void main(String[] args) {
		GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
		GraphicsDevice[] gd = ge.getScreenDevices();
		System.out.println(gd.length);
	}

}