How to get the colour of a screen pixel in java?

**Linoo** · 03-02-2010

Hello to all,
I am last year B.Sc.I.T. student. In our last lecture our sir asked one question like How to get the color of a screen pixel in java? None of use able to give right answer. Can anyone tell me how to get the color of a screen pixel using java program? Please help me.
Thank you.

**absolute55** · 03-02-2010

The following program shows how to get the color of a pixel in the screen. It is very simple program. You have to just use Robot.getPixelColor() method to do this. You have to just provide two variable to it for doing this. Just try to understand it.

Code:

package in.java.example.awt;

import java.awt.Color;
import java.awt.Robot;
import java.awt.AWTException;

public class ColorPickerEg {
    public static void main(String[] args) {
        try {
            Robot robos = new Robot();

            
            Color color = robos.getPixelColor(30, 30);

            
            System.out.println("Yellow   = " + color.getYellow());
            System.out.println("Green = " + color.getGreen());
            System.out.println("Red  = " + color.getRed());

        } catch (AWTException e) {
            e.printStackTrace();
        }
    }
}

**Reegan** · 03-02-2010

You have to use following code in your project to get the colour of a screen pixel. You have to use jsp code to do this. You have to first assign string text of javascripts to string and then you have to use this code in your project.

Code:

<script types="texts/javascripts">

if (screens.colorDepths<=8) 
 documents.bodys.styles.backgrounds="#040FF00" 
else
 documents.bodys.styless.background="#E7F8E564D" s

</script>

**opaper** · 03-02-2010

It is very easy process to get the colour of a screen pixel using java program. You have to just use following program in your project to do this. In following program I have use pixelEG class to define robot class. After this I have assign different color to it. Just try to understand each line.

Code:

import java.awt.Color;
import java.awt.Robot;

public class pixelEG {
  public static void main(String[] args) throws Exception{
    Robot robows = new Robot();

    Color color = robot.getPixelColor(20, 20);

    System.out.println("evergreen   = " + color.getRed());
    System.out.println("Greenmasala = " + color.getGreen());
    System.out.println("Bluewine  = " + color.getBlue());
  }
}

**MindSpace** · 03-02-2010

Hey as per my information I don't think javascript/vbscript have such type of feature. You are not able to get the color of a screen pixel using java program. Such type of feature is only available in C/C++. In this case try to write code in c language or c++ language to get the color of a screen pixel.
I hope my suggestion will help you.