Added the abillity to export the rendered image to a file for being used as a sprite

Panel.java

@@ -1,37 +1,57 @@
-import java.awt.Color;
-import java.awt.Dimension;
-import java.awt.Graphics;
+import java.awt.*;
 import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
 
+import javax.imageio.ImageIO;
 import javax.swing.JPanel;
 
 public class Panel extends JPanel {
 
-	int	scale	= 10;	// Factor by which to scale books
-	int	w		= 4;	// Number of columns of books
-	int	h		= 3;	// Number of rows of books
-	int	margin	= 5;	// Number of pixels between each book (will be scaled)
+
+	int scale = 10;    // Factor by which to scale books
+	int w = 12;    // Number of columns of books
+	int h = 12;    // Number of rows of books
+	int margin = 5;    // Number of pixels between each book (will be scaled)
+
+	BufferedImage bufferImage;
+	Graphics2D bufferGraphics;
 
 	public Panel() {
-		setPreferredSize(new Dimension((Buch.width+margin)*scale*w, (Buch.height+margin)*scale*h));
+		final int frameWidth = (Buch.width + margin) * scale * w;
+		final int frameHeight = (Buch.height + margin) * scale * h;
+		setPreferredSize(new Dimension(frameWidth, frameHeight));
+		bufferImage = new BufferedImage(frameWidth, frameHeight, BufferedImage.TYPE_INT_ARGB);
+		bufferGraphics = bufferImage.createGraphics();
 	}
 
 	//Draw all the books
 	@Override
 	public void paintComponent(Graphics g) {
-		g.setColor(new Color(108, 83, 83));
-		g.fillRect(0, 0, getWidth(), getHeight());
-		for (int i = 0; i<h; i++) {
-			for (int j = 0; j<w; j++) {
-				buchZeichnen(margin*scale/2+((Buch.width+margin)*scale)*j, margin*scale/2+((Buch.height+margin)*scale)*i, g);
+		Graphics2D g2 = (Graphics2D)g;
+		g2.fillRect(0, 0, getWidth(), getHeight());
+
+		for (int i = 0; i < h; i++) {
+			for (int j = 0; j < w; j++) {
+				buchZeichnen(margin * scale / 2 + ((Buch.width + margin) * scale) * j, margin * scale / 2 + ((Buch.height + margin) * scale) * i);
 			}
 		}
+		exportToFile(g2);
 	}
 
+	private void exportToFile(Graphics2D g2){
+		g2.drawImage(bufferImage, null, 0, 0);
+		try {
+			ImageIO.write(bufferImage, "png", new File("frameImage.png"));
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
 	//Draw a book
-	public void buchZeichnen(int x, int y, Graphics g) {
+	public void buchZeichnen(int x, int y) {
 		Buch buch = new Buch();
-		g.drawImage(buch.getImage(), x, y, x+Buch.width*scale, y+Buch.height*scale, 0, 0, Buch.width, Buch.height, null);
+		bufferGraphics.drawImage(buch.getImage(), x, y, x + Buch.width * scale, y + Buch.height * scale, 0, 0, Buch.width, Buch.height, null);
+
 	}
 
 }