img avg

package com.company;

import java.awt.image.DataBufferInt;
import java.awt.*;
import javax.swing.*;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.util.Arrays;
import java.util.OptionalDouble;

public class Main {

    public static void main(String[] args) throws AWTException {
        long startTime = System.nanoTime();

        Robot robot = new Robot();

        Rectangle screenRect = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
        BufferedImage screenFullImage;
        screenFullImage = robot.createScreenCapture(screenRect);
        int[] pixels = ((DataBufferInt) screenFullImage.getRaster().getDataBuffer()).getData();

        OptionalDouble average = Arrays.stream(pixels).parallel().average();

        int resultColor = new Double(average.getAsDouble()).intValue();

        int r = (resultColor)&0xFF;
        int g = (resultColor>>8)&0xFF;
        int b = (resultColor>>16)&0xFF;
        int a = (resultColor>>24)&0xFF;

        System.out.println("R: " + r);
        System.out.println("G: " + g);
        System.out.println("B: " + b);
        System.out.println("A: " + a);

        long stopTime = System.nanoTime();

        System.out.println((stopTime - startTime) / 1000 / 1000);

        JFrame frame = new JFrame();
        frame.getContentPane().setLayout(new FlowLayout());
        ImageIcon imgIcon = new ImageIcon(screenFullImage);
        frame.getContentPane().add(new JLabel(imgIcon));
        frame.pack();
        frame.setVisible(true);

        JFrame frame2 = new JFrame();
        frame2.setSize(100,100);
        frame2.getContentPane().setBackground(new Color(r,g,b,a));
        frame2.setVisible(true);
    }
}