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import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.File;
import javax.imageio.ImageIO;
public class Main {
public static void main(String[] argv) throws Exception {
int width = 100;
int height = 100;
BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = bufferedImage.createGraphics();
g2d.setColor(Color.white);
g2d.fillRect(0, 0, width, height);
g2d.setColor(Color.black);
g2d.fillOval(0, 0, width, height);
g2d.dispose();
RenderedImage rendImage = bufferedImage;
File file = new File("newimage.png");
ImageIO.write(rendImage, "png", file);
file = new File("newimage.jpg");
ImageIO.write(rendImage, "jpg", file);
}
}
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