Java! createImage(byte[] imagedata)?

Question

I need to create an image using

Image createImage(byte[] imagedata)

(NOT createImage(ImageProducer producer))

My code is

import java.awt.*;

import java.awt.image.*;

class MyCreateImage extends Frame{

Image img;

public static void main (String args[]) {

new MyCreateImage("Create Image");

}

public MyCreateImage(String s) {

super(s);

setSize(600, 500);

setVisible(true);

byte pixels[] = {100, 60, 100, 10, 50};

img = Toolkit. getDefaultToolkit(). createImage(pixels)

System.out.println("w = " + img.getWidth(this));

System.out.println("h = " + img.getHeight(this));

}

public void paint (Graphics g) {

g.drawImage(img, 100, 100, this);

} }

Why I get

--> w = -1

--> h = -1

I would appreciate any help! Thanks in advance.

Answer 1

In your main() and MyCreateImage() methods, i don't see any calls to paint(). It looks as if paint() just sits there and is never called, might want to check that.

Answer 2

Try to use BufferedImage

    int data[] = new int[width*height];

    int i = 0;

    for(int y = 0; y < height; y++){

      int red = (y * 255) / (height - 1);

      for(int x = 0; x < width; x++){

        int green = (x * 255) / (width - 1);

        int blue = 128;

        data[i++] = (red << 16) | (green << 8) | blue;

      }

    }

    img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

    img.setRGB(0, 0, width, height, data, 0, width);