How can all pixels of an image be traversed in Java?

To iterate through all the pixels of an image, you can utilize Java’s image processing libraries such as JavaFX or Java.awt.

Here is an example code using JavaFX:

import javafx.scene.image.Image;
import javafx.scene.image.PixelReader;

public class ImagePixelTraversal {
    public static void main(String[] args) {
        Image image = new Image("path/to/image.jpg");
        int width = (int) image.getWidth();
        int height = (int) image.getHeight();
        
        PixelReader pixelReader = image.getPixelReader();
        
        for (int y = 0; y < height; y++) {
            for (int x = 0; x < width; x++) {
                int argb = pixelReader.getArgb(x, y);
                int alpha = (argb >> 24) & 0xFF;
                int red = (argb >> 16) & 0xFF;
                int green = (argb >> 8) & 0xFF;
                int blue = argb & 0xFF;
                
                // 对每个像素进行处理
                // ...
            }
        }
    }
}

The above code will read an image from a specified path and then iterate through each pixel using a PixelReader object. During the iteration, you can access the ARGB value of each pixel and process it. In the example code, we extract the ARGB value into four components: alpha, red, green, and blue.

You can write code based on your own needs at the position where each pixel is processed.