Migrating from JDK 1.5.0_06 to 1.8.0_66 - Replacing the deprecated Java JPEG classes -

i migrating application jdk 1.5.0_06 1.8.0_66. in application, there multiple files use com.sun.image.codec.jpeg classes. when try create jar i'm getting below error.

error: package com.sun.image.codec.jpeg not exist import com.sun.image.codec.jpeg.*; 

i referred blog on replacing deprecated java jpeg classes java 7 , errors cleared. i'm getting warning below:

warning: jpegimagewriter internal proprietary api , may removed in future release import com.sun.imageio.plugins.jpeg.jpegimagewriter; 

the problematic code blog:

public static void saveasjpeg(string jpgflag, bufferedimage image_to_save, float jpegcompression, fileoutputstream fos) throws ioexception {     // image writer     jpegimagewriter imagewriter = (jpegimagewriter) imageio.getimagewritersbysuffix("jpeg").next();     imageoutputstream ios = imageio.createimageoutputstream(fos);     imagewriter.setoutput(ios);      //and metadata     iiometadata imagemetadata = imagewriter.getdefaultimagemetadata(new imagetypespecifier(image_to_save), null);      if (jpgflag != null) {         int dpi = 96;          try {             dpi = integer.parseint(jpgflag);         }         catch (exception e) {             e.printstacktrace();         }          //new metadata         element tree = (element) imagemetadata.getastree("javax_imageio_jpeg_image_1.0");         element jfif = (element) tree.getelementsbytagname("app0jfif").item(0);         jfif.setattribute("xdensity", integer.tostring(dpi));         jfif.setattribute("ydensity", integer.tostring(dpi));     }      if (jpegcompression >= 0 && jpegcompression <= 1f) {         // new compression         jpegimagewriteparam jpegparams = (jpegimagewriteparam) imagewriter.getdefaultwriteparam();         jpegparams.setcompressionmode(jpegimagewriteparam.mode_explicit);         jpegparams.setcompressionquality(jpegcompression);     }      //new write , clean     imagewriter.write(imagemetadata, new iioimage(image_to_save, null, null), null);     ios.close();     imagewriter.dispose(); } 

the problematic line in code is:

jpegimagewriter imagewriter = (jpegimagewriter) imageio.getimagewritersbysuffix("jpeg").next(); 

there's no need cast , usage of specific subclass (jpegimagewriter). it's practice not rely on specific plugin subclasses. in case, use imagewriter base class.

imagewriter imagewriter = imageio.getimagewritersbysuffix("jpeg").next(); 

everything else work , run before.

note: jpegimagewriteparam class on other hand, is part of public api (javax.imageio.plugins.jpeg package) , needed access jpeg specific writing options. usage ok.