[Spiderman]

Вот примерчик нашел. Должно работать:

private Image resizeImage(Image image,int xx,int yy) {
int srcWidth = image.getWidth();
int srcHeight = image.getHeight();

int thumbHeight=10,thumbWidth=10;
int newWidth = xx;
int newHeight = yy;//-1;

if (thumbHeight == -1)
newHeight = thumbWidth * srcHeight / srcWidth;

Image newImage = Image.createImage(newWidth, newHeight);
Graphics g = newImage.getGraphics();

for (int y = 0; y < newHeight; y++) {
for (int x = 0; x < newWidth; x++) {
g.setClip(x, y, 1, 1);
int dx = x * srcWidth / newWidth;
int dy = y * srcHeight / newHeight;
g.drawImage(image, x - dx, y - dy,
Graphics.LEFT | Graphics.TOP);
}
}

Image immutableImage = Image.createImage(newImage);

return immutableImage;
}