jdk内置类javax.imageio.ImageIO支持的图片处理格式

执行这段代码输出支持的图片处理格式

String readFormats[] = ImageIO.getReaderFormatNames();
        String writeFormats[] = ImageIO.getWriterFormatNames();
        System.out.println("Readers: " + Arrays.asList(readFormats));
        System.out.println("Writers: " + Arrays.asList(writeFormats));

Readers: [JPG, jpg, tiff, pcx, PCX, bmp, BMP, gif, GIF, WBMP, png, PNG, raw, RAW, JPEG, pnm, PNM, tif, TIF, TIFF, wbmp, jpeg]
Writers: [JPG, jpg, tiff, bmp, BMP, pcx, PCX, gif, GIF, WBMP, png, PNG, raw, RAW, JPEG, pnm, PNM, tif, TIF, TIFF, wbmp, jpeg]