Overlaying and comparing two images code error

I am still very much a beginner in programming, and I am facing an issue with a code that I am hoping someone could help me with. I found the java code below for overlaying and comparing the pixels of two images in an online forum. When I try to compile the code I get a syntax error. Hope you can help me find the error. Thanks in advance.

The code

package stackexchange;

import java.awt.Color;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

public class PictureOverlayTest {
/*
* Four variables, three for the wanted BufferedImages, one String for the
* Path of the third Image, which does not already exist.
*/`

private BufferedImage image1;
private BufferedImage image2;
private BufferedImage image3;

private String pathImage3;

public PictureOverlayTest(String filePathAndName1, String filePathAndName2,
String filePathAndName3) throws IOException {
/*
* Constructor in order to keep this method reusable and clean. Needs
* three Strings. The paths and Filenames of all three images. Image 1
* and 2 should exist already, Image 3 will be created if all
* requirements are met. Constructor creates the first two buffered
* images, sets all needed variables and starts the checkAndCompare()
* method
*/

File file = new File(filePathAndName1);
this.image1 = ImageIO.read(file);

file = new File(filePathAndName2);
this.image2 = ImageIO.read(file);

this.pathImage3 = filePathAndName3;
checkAndCompare();
}

private void checkAndCompare() throws IOException {
/*
* This function creates the Color blue, compares the sizes of both
* pictures and if they are the same, creates a third image. Then it
* loops through the two images and compares each pixel. If the pixels
* are the same, the third image gets a blue pixel at that point
*/

Color blue = Color.blue;

if (image1.getHeight() == image2.getHeight()
&& image1.getWidth() == image2.getWidth()) {

image3 = new BufferedImage(image1.getWidth(), image1.getHeight(),
image1.getType());
for (int y = 0; y < image1.getHeight(); y++) {
for (int x = 0; x < image1.getWidth(); x++) {

int colorImage1 = image1.getRGB(x, y);
int colorImage2 = image2.getRGB(x, y);

if (colorImage1 == colorImage2) {

image3.setRGB(x, y, blue.getRGB());

} else {

// Whatever Color you want. By default it is black.

}

}
}
savePicture3();
System.out.println("Message: Image comparison is done");

} else {

System.out.println("Error: Image dimensions do not match");

}

}

private void savePicture3() throws IOException {
/*
* This method saves the created Image into a file onto your computer.
* The if() statement is used to check if the file was successfully
* created, in order to avoid unwanted errors. Keep in mind, that you
* have to change the "bmp" in ImageIO.write() to whatever format you
* actually want
*/

File file = new File(pathImage3);
if (file.createNewFile()) {
ImageIO.write(image3, "bmp", file);
}
}

}

package stackexchange;

import java.io.IOException;

public class Main {

public static void main(String[] args) {
// TODO Auto-generated method stub

try {
PictureOverlayTest test = new PictureOverlayTest(
"H:\\stackexchange\\file1.bmp",
"H:\\stackexchange\\file2.bmp",
"H:\\stackexchange\\file3.bmp");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

}

 

I'm not willing to go through this code line by line and I'm not wiling to compile it.
Please tell me the exact Syntax Error you are getting.

 

The code doesnt compile at all it just says syntax error

 

These are the errors am getting:
https://postimg.cc/gallery/fJZW2k5

 

Wow I'm really outdated with Java.
The only thing I can see wrong at a glance is that module-info is not supposed to contain your entire code

Also, the class: PictureOverlayTest should be in its own file "PictureOverlayTest.java".