生成 图片的 缩略图

public static void main(String[] args) throws IOException {
		
		File input = new File("C://000.jpg");
		
		Image src = javax.imageio.ImageIO.read(input);
		int width = (int) (src.getWidth(null) * 70 / 100.0);
        int height = (int) (src.getHeight(null) * 70 / 100.0);
        
		BufferedImage bufferedImage = new BufferedImage(width, height,
                BufferedImage.TYPE_INT_RGB);

		bufferedImage.getGraphics().drawImage(src.getScaledInstance(width, height, Image.SCALE_SMOOTH),0, 0, null);
		
		FileOutputStream imgOutputStream = new FileOutputStream("C://001.jpg");
		
		JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(imgOutputStream);
        encoder.encode(bufferedImage);

	}

以上是 生成 70%的缩略图。。。