WARNING: Illegal reflective access by com.bulenkov.iconloader.util.UIUtil (file:/data/jmeter/jmeters/apache-jmeter-4.0/lib/darcula.jar) to field sun.awt.CGraphicsDevice.scale WARNING: Illegal reflective access by org.codehaus.groovy.reflection.CachedClass (file:/data/jmeter/jmeters/apache-jmeter-4.0/lib/groovy-all-2.4.13.jar) to method java.lang.Object.finalize() WARNING: Illegal reflective access by org.codehaus.groovy.reflection.CachedClass (file:/data/jmeter/jmeters/apache-jmeter-4.0/lib/groovy-all-2.4.13.jar) to method java.lang.Object.clone() WARNING: Illegal reflective access by org.codehaus.groovy.reflection.CachedClass (file:/data/jmeter/jmeters/apache-jmeter-4.0/lib/groovy-all-2.4.13.jar) to method java.lang.Object.registerNatives() WARNING: Illegal reflective access by org.codehaus.groovy.vmplugin.v7.Java7$1 (file:/data/jmeter/jmeters/apache-jmeter-4.0/lib/groovy-all-2.4.13.jar) to constructor java.lang.invoke.MethodHandles$Lookup(java.lang.Class,int) This is due to: https://issues.apache.org/jira/browse/GROOVY-8339
This issue has been migrated to GitHub: https://github.com/apache/jmeter/issues/4683