问题
I am using drools project in eclipse luna, java 1.8, drools 5.4.0. When i am opening drools file it is showing value '1.8' is not a valid language level. what should i do?
回答1:
Late answer but posting anyway hoping it'll help someone.
Drop down the compliance level to Java7: Project Properties> Java Compiler and Tick "Enable Project specific settings" Select compiler compliance level to 1.7.
If your project is faceted may need to drop down the facet version as well. Project Properties> Project Facets and select 1.7 for the row containing Java.
回答2:
Drop down the compliance level to Java7:
Project Properties> Java Compiler and Tick "Enable Project specific settings" Select compiler compliance level to 1.7.
回答3:
its a bug with drools eclipse and java 8 https://bugzilla.redhat.com/show_bug.cgi?id=1078146
来源：https://stackoverflow.com/questions/27603747/in-eclipse-it-is-showing-value-1-8-is-not-a-valid-language-level