[Radiance] Sonatype JAR for Hibiscus created with Java 9 classfile version about radiance HOT 5 CLOSED

You can still use a more advanced Java to do it, but simply pass a command-line argument (configured in Maven) to compile for an older version. There is also a Maven plugin I use to check during the build process that I have not used any classes or APIs that are newer than my target Java version. I will investigate what those are and share them here.

from radiance.

Hopefully I just missed this line in build.gradle for Hibiscus:

sourceCompatibility = 1.8

I'll check in the evening when I get to the machine I use to upload to Sonatype.

from radiance.

Ok. In my Beat Link project which targets Java 6, check out the following sections of the pom.xml:

• In <project>…<build>…<plugins> I configure the maven-compiler-plugin to expect Java 6 source and emit Java 6 classes.
• Immediately after that I configure the Codehaus animal-sniffer-maven-plugin to validate that I am only using APIs available in Java 6.

With those things in place, I can ensure that my builds, if they succeed, will work fine on Java 6.

from radiance.

I don’t think source compatibility is enough; you need to be sure you are generating the proper class format as well, and that you haven’t accidentally referred to some class that is available in a more recent JDK but not in Java 8 (in your case), or the class that refers to it will fail to load with a NoClassDefFoundError. That’s what the animal-sniffer plugin does.

from radiance.

Should be fixed now with sourceCompatibility in build.gradle for Hibiscus.

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