I found the issue is related to the specified parent classloader: https://github.com/apache/groovy/blob/master/src/test/org/codehaus/groovy/transform/classloading/TransformsAndCustomClassLoadersTest.groovy#L46
Looking for the way to expose javax.tools classes to the classloader... ----- Apache Groovy committer Blog: http://blog.sunlan.me Twitter: @daniel_sun -- Sent from: http://groovy.329449.n5.nabble.com/Groovy-Dev-f372993.html