springboot CLI does not work with Java9

Running a simple script with the cli and Java 9 yield the following:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.codehaus.groovy.vmplugin.v7.Java7$1 (jar:file:/Users/snicoll/tools/spring-boot-cli/spring-2.0.0.BUILD-SNAPSHOT/lib/spring-boot-cli-2.0.0.BUILD-SNAPSHOT.jar!/BOOT-INF/lib/groovy-2.5.0-beta-1.jar!/) to constructor java.lang.invoke.MethodHandles$Lookup(java.lang.Class,int)
WARNING: Please consider reporting this to the maintainers of org.codehaus.groovy.vmplugin.v7.Java7$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
java.lang.reflect.InvocationTargetException
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:488)
    at org.springframework.boot.cli.app.SpringApplicationLauncher.launch(SpringApplicationLauncher.java:65)
    at org.springframework.boot.cli.command.run.SpringApplicationRunner$RunThread.run(SpringApplicationRunner.java:173)
Caused by: java.lang.IllegalArgumentException: Cannot instantiate interface org.springframework.context.ApplicationContextInitializer : org.springframework.boot.context.ConfigurationWarningsApplicationContextInitializer
    at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:439)
    at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:418)
    at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:409)
    at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:266)
    at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:247)
    ... 6 more
Caused by: java.lang.NoClassDefFoundError: java/sql/SQLException
    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:161)
    at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:435)
    ... 10 more
Caused by: java.lang.ClassNotFoundException: java.sql.SQLException
    at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:466)
    at org.springframework.boot.cli.compiler.ExtendedGroovyClassLoader.findClass(ExtendedGroovyClassLoader.java:84)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:563)
    at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:678)
    at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:788)
    at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:776)
    ... 12 more

I suspect ExtendedGroovyClassLoader to be the culprit.

Comment From: Sujin1135

@wilkinsona Thanks about it