如何使用工具包獲取裁剪圖像？

Question

image = ImageIO.read(new File("C:/Graphics/src/name2.jpg"));   

ImageFilter filter = new CropImageFilter(0, 0, 250, 250); 
    ImageProducer producer = new FilteredImageSource(image.getSource(), filter); 

Image resultImage = Toolkit.getDefaultToolkit().createImage(
    producer); 
ImageIO.write(resultImage, "jpg", 
    new File("C:/Graphics/src/name7.jpg")); //not allowing me 

//這是行顯示錯誤爲：

The method write(RenderedImage, String, File) in the type ImageIO is not 
    applicable for the arguments (Image, String, File) 

Answer 1

參見BufferedImage.html#getSubimage(x,y,,w,h)用於子圖像。

要獲得BufferedImage，請使用ImageIO.read(File/InputStream/URL)。

---

The method write(RenderedImage, String, File) in the type ImageIO is not 
    applicable for the arguments (Image, String, File) 

的image顯然聲明爲Image，將其更改爲：

BufferedImage image = ImageIO.read(new File("C:/Graphics/src/name2.jpg"));