picu = rotateImage(pic,dt); 

      g.drawImage(picu,300,100,this); 
      g.drawImage(pic,500,100,this);

//---------------------------------------------------

private static BufferedImage rotateImage(BufferedImage src, double degrees) 
    { 
        AffineTransform affineTransform = AffineTransform.getRotateInstance(Math.toRadians(degrees),src.getWidth() / 2,src.getHeight() / 2); 
        BufferedImage rotatedImage = new BufferedImage(src.getWidth(), src.getHeight(), src.getType()); 
        Graphics2D g = (Graphics2D) rotatedImage.getGraphics(); 
        g.setTransform(affineTransform); 
        g.drawImage(src, 0, 0, null); 
        return rotatedImage; 
    }