The UnsatisfiedLinkError seems to indicate that the native initReaderIDs method cannot be found.
This method should be exported by the libjavajpeg.so library installed in the jre/lib/<arch>/ directory of the JDK. Here are the JNI functions found in the libjavajpeg.so of openjdk-8: ebourg@icare:~$ nm -D /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/libjavajpeg.so | grep Java 0000000000001840 T Java_sun_awt_image_JPEGImageDecoder_initIDs 0000000000001930 T Java_sun_awt_image_JPEGImageDecoder_readImage As a comparison, here are the functions found in the libjavajpeg.so of openjdk-7: ebourg@icare:~$ nm -D /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/libjavajpeg.so | grep Java 0000000000005b70 T Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_abortRead 0000000000005c80 T Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_disposeReader 0000000000004720 T Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_initJPEGImageReader 0000000000004550 T Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_initReaderIDs 0000000000005040 T Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_readImage 00000000000049e0 T Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_readImageHeader 0000000000005ba0 T Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_resetLibraryState 0000000000005bd0 T Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_resetReader 0000000000005010 T Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_setOutColorSpace 0000000000004990 T Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_setSource 0000000000007620 T Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_abortWrite 00000000000076b0 T Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_disposeWriter 0000000000005ef0 T Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_initJPEGImageWriter 0000000000005db0 T Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_initWriterIDs 0000000000007650 T Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_resetWriter 0000000000006150 T Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_setDest 0000000000006550 T Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_writeImage 00000000000061b0 T Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_writeTables 0000000000008030 T Java_sun_awt_image_JPEGImageDecoder_initIDs 0000000000008100 T Java_sun_awt_image_JPEGImageDecoder_readImage So libjavajpeg.so in openjdk-8 is missing all the Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_* functions. They are defined in imageioJPEG.c, I wonder how they came to disappear from the compiled library. ebourg@icare:~/openjdk8$ grep Java_ jdk/src/share/native/sun/awt/image/jpeg/imageioJPEG.c Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_initReaderIDs Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_initJPEGImageReader Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_setSource Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_readImageHeader Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_setOutColorSpace Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_readImage Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_abortRead Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_resetLibraryState Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_resetReader Java_com_sun_imageio_plugins_jpeg_JPEGImageReader_disposeReader Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_initWriterIDs Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_initJPEGImageWriter Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_setDest Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_writeTables Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_writeImage Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_abortWrite Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_resetWriter Java_com_sun_imageio_plugins_jpeg_JPEGImageWriter_disposeWriter Emmanuel Bourg __ This is the maintainer address of Debian's Java team <http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-java-maintainers>. Please use debian-j...@lists.debian.org for discussions and questions.