How to Merge Photos in Java. For more details: https://kb.aspose.com/imaging/java/how-to-merge-photos-in-java/

How to Merge Photos in Java.

import com.aspose.imaging.*;
public class Main {
    public static void main(String[] args) throws Exception // Merge photos in Java
    {
        // Set the licenses
        new License().setLicense("License.lic");


        // Creating an array of strings
        String[] imagePaths = new String[3];

        // Initializing array elements
        imagePaths[0] = "Sample1.jpg";
        imagePaths[1] = "Sample2.jpg";
        imagePaths[2] = "Sample3.jpg";

        // Path of output image
        String outputPath = "output-combine.jpg";

        // Get resulting image size
        int newWidth = 0;
        int newHeight = 0;
        for (String imagePath : imagePaths) {
            try (com.aspose.imaging.RasterImage image = (com.aspose.imaging.RasterImage) com.aspose.imaging.Image.load(imagePath)) {
                com.aspose.imaging.Size size = image.getSize();
                newWidth = Math.max(newWidth, size.getWidth());
                newHeight += size.getHeight();
            }
        }

        // Combine images into new one
        try (com.aspose.imaging.imageoptions.JpegOptions options = new com.aspose.imaging.imageoptions.JpegOptions()) {
            options.setSource(new com.aspose.imaging.sources.StreamSource()); // empty
            options.setQuality(100);

            // Create resultant image
            try (com.aspose.imaging.fileformats.jpeg.JpegImage newImage = (com.aspose.imaging.fileformats.jpeg.JpegImage) com.aspose.imaging.Image.create(options, newWidth, newHeight)) {
                int stitchedHeight = 0;
                for (String imagePath : imagePaths) {
                    try (com.aspose.imaging.RasterImage image = (com.aspose.imaging.RasterImage) com.aspose.imaging.Image.load(imagePath)) {
                        com.aspose.imaging.Rectangle bounds = new com.aspose.imaging.Rectangle(0, stitchedHeight, image.getWidth(), image.getHeight());
                        newImage.saveArgb32Pixels(bounds, image.loadArgb32Pixels(image.getBounds()));
                        stitchedHeight += image.getHeight();
                    }
                }
                // Save resultant image
                newImage.save(outputPath);
            }
        }

        System.out.println("Done");
        }
    }