Month: March 2020

Recently I was looking into encoding problems and I was really surprised to find this:

docker run –rm adoptopenjdk/openjdk11-openj9:jre-11.0.2.9_openj9-0.12.1-alpine java -XshowSettings 2>&1 | grep encoding

file.encoding = ANSI_X3.4-1968
file.encoding.pkg = sun.io
ibm.system.encoding = ANSI_X3.4-1968
os.encoding = ANSI_X3.4-1968
sun.io.unicode.encoding = UnicodeLittle
sun.jnu.encoding = ANSI_X3.4-1968

Even adding environment variables like LC_ALL or LANG did not help 🙁

docker run –rm -e LANG=en_US.UTF-8 -e LC_ALL=en_US.UTF-8 adoptopenjdk/openjdk11-openj9:jre-11.0.2.9_openj9-0.12.1-alpine java -XshowSettings 2>&1 | grep encoding

But the issue was fixed with a more recent version of the image:

docker run –rm adoptopenjdk/openjdk11-openj9:jre-11.0.6_10_openj9-0.18.1-alpine java -XshowSettings 2>&1 | grep encoding

file.encoding = UTF-8
file.encoding.pkg = sun.io
ibm.system.encoding = UTF-8
os.encoding = UTF-8
sun.io.unicode.encoding = UnicodeLittle
sun.jnu.encoding = UTF-8

Be aware of this insides of the images you use!

Happy coding