JMX2Graphite needs to support Java version 11

[rfalke]

$ ./gradlew build --stacktrace

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine java version from '11.0.1'.

* Try:
Run with --info or --debug option to get more log output.

* Exception is:
java.lang.IllegalArgumentException: Could not determine java version from '11.0.1'.
	at org.gradle.api.JavaVersion.toVersion(JavaVersion.java:63)
	at org.gradle.api.JavaVersion.current(JavaVersion.java:72)
	at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:32)
	at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)
	at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:206)
	at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:169)
	at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
	at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
	at org.gradle.launcher.Main.doAction(Main.java:33)
	at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:54)
	at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:35)
	at org.gradle.launcher.GradleMain.main(GradleMain.java:23)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:30)
	at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:129)
	at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
$ java -version
openjdk version "11.0.1" 2018-10-16
OpenJDK Runtime Environment 18.9 (build 11.0.1+13)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.1+13, mixed mode)
$ grep distributionUrl gradle/wrapper/gradle-wrapper.properties 
distributionUrl=https\://services.gradle.org/distributions/gradle-2.8-all.zip
$

Maybe a Gradle update will help.