在Java中将2D整数数组显示为图像

Question

I'm trying to create an application in Java that will print an image based on an array of integers where each integer represents a color. Is there a straightforward way to accomplish this?

public void displayImage(int[][] arr){
    for(int i = 0; i < arr.length; i++){
        for(int j = 0; j < arr[0].length; j++){
            switch(arr[i][j]){
                case 1:
                //print a gray pixel at (i, j) within a frame
                case 0:
                //print a green pixel at (i, j) within a frame
                case 2:
                //print a white pixel at (i, j) within a frame
            }
        }
    }
}

Answer 1

You can use BufferedImage , as shown in this example .

Addendum: The example cited updates the image's underlying WritableRaster using an int array of color components, but setRGB() is convenient if the color is already available.