Image overlay and comparison 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. Here is the link to the three images showing the errors that i am getting ( https://postimg.cc/gallery/fJZW2k5 ). 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 want to look at the pixels in two comparable pictures, createing a saved third picture where the pixels that are a similar between the two are become blue. The code likewise needs to make sure that the pictures are of a similar size prior to starting the examination, and ways out with a mistake to the control center on the off chance that they are not a similar size. Here is the code I have. I actually need to overlay the two pictures and turn the comparable pixels blue. I really want to utilize Filechooser.pickAFile yet other than that I am totally lost regarding how to go about it.
import java.awt.Color;

public class PP2kthoma34
{

public static void principal (String[] args)
{
// Unique picture
Picture p1;//make the variable
String fileName = FileChooser.pickAFile();
FileChooser.setMediaPath ( fileName );
System.out.println (fileName);
p1 = new Picture( fileName );

// Width and length of unique picture
int width1 = p1.getWidth();
int height1 = p1.getHeight();
Pixel[] pixelArray1 = p1.getPixels();
System.out.println(pixelArray1.length + "pixels");
System.out.println("");

// Changed picture
Picture p2;//make the variable
String filename2;
filename2 = FileChooser.pickAFile();
FileChooser.setMediaPath ( filename2 );
System.out.println (filename2);
p2 = new Picture( filename2 );

//Width and Height of controlled picture
int width2 = p2.getWidth();
int height2 = p2.getHeight();
Pixel[] pixelArray2 = p2.getPixels();
System.out.println(pixelArray2.length + "pixels");
System.out.println("");

//making sure that the pictures are a similar size
in the event that ((width1 != width2) || (height1 != height2))
{
System.err.println("Error: Image aspects don't coordinate");
System.exit(1);
}

// Save Third picture with similitudes featured in blue.
String filename3;
filename3 = FileChooser.pickAFile();
p2.write( filename3 );
}

}// end