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whois-server-list / public-suffix-list

Java API for Mozilla's Public Suffix List
Do What The F*ck You Want To Public License
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UnsupportedClassVersionError #7

Open qcastel opened 8 years ago

qcastel commented 8 years ago

I'm trying to use your library with java 7. When I compile, I get

Java unsupported major minor version 52.0

so I believe the jar is compiled with Java 8.

My application needs to be compatible with java 7 and 8. Have you got a suggestion? using 2.0.1?

michaelseanhansen commented 8 years ago

Same issue here on Java 7. Downgrading to 2.0.1 allows it to work, but I'd love to see this resolved.

ansell commented 8 years ago

The maven-compiler-plugin needs to be configured to get a consistent target JVM version:

https://maven.apache.org/plugins/maven-compiler-plugin/examples/set-compiler-source-and-target.html

Currently it isn't configured so will use whatever default method maven-compiler-plugin is setup to use to choose these.

ansell commented 8 years ago

Looking further into it, the author has configured it in the parent pom for all of their projects to be 1.8:

https://repo.maven.apache.org/maven2/de/malkusch/parent/oss-parent/1.10/oss-parent-1.10.pom

However, that can be overriden locally for this project to downgrade it to Java7.

Opened a pull request with a fix for the next version:

https://github.com/whois-server-list/public-suffix-list/pull/10