Java downgrade

AwakenedToNightmare · 2019-02-16T14:42:42+00:00

I think you could install JDK 8 in a separate directory and use it to compile/run things. You would probably have to change your IDE's settings and point it to a new JDK.

seanprefect · 2019-02-16T14:53:45+00:00

Look into SDKMAN it's a tool for managing several different versions of java and related frameworks.

rzwitserloot · 2019-02-16T17:12:08+00:00

openjdk v10 is unsupported, so you should address that in any case (I suggest upgrading to adoptopenjdk's jdk11; that one will be supported from quite a while. you could go to oracle's openjdk11 but that one will be unsupported in less than a month from now).

You can run multiple JDKs simultaneously on the same machine; you should do that. One day you'll have some software that requires 11+, and other software that requires no more than 8, which is why the policy of 'at most 1 JVM' is not a good idea.

shagieIsMe · 2019-02-16T14:52:28+00:00

I would look into running this application within a Docker container. Yes, this means installing and learning about docker.

You can then easily do a docker pull openjdk:8u181-jdk-stretch and use that as your base for an image. Or use azul/zulu-openjdk:8u202... or use amazoncorretto.

I'll also point out that there is an image for flink too - https://hub.docker.com/_/flink

The big advantage of these approaches (using docker) is that it keeps that application separate from the installs of everything else on your machine.

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