JAVA实现图像文件读写

public static void main(String args[]) throws IOException {
// 读取图片文件
File sourceImageFile = new File("test.bmp");
BufferedImage image = ImageIO.read(sourceImageFile);
// 写入/转换PNG图片文件
File descImageFile = new File("test.png");
ImageIO.write(image,"PNG",descImageFile);
// 写入/转换GIF图片文件
File descImageFile = new File("test.gif");
ImageIO.write(image,"GIF",descImageFile);
// 写入/转换JPG图片文件
File descImageFile = new File("test.jpg");
ImageIO.write(image,"JPG",descImageFile);
}