我已经groovy通过终端安装在我的 OS X 上，但我无法运行任何东西。出现以下异常：
java.lang.SecurityException: Prohibited package name: java.lang
at java.lang.ClassLoader.preDefineClass(ClassLoader.java:659)
at java.lang.ClassLoader.defineClass(ClassLoader.java:758)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at org.codehaus.groovy.tools.RootLoader.oldFindClass(RootLoader.java:175)
at org.codehaus.groovy.tools.RootLoader.loadClass(RootLoader.java:147)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
at java.lang.Class.getMethod0(Class.java:3018)
at java.lang.Class.getMethod(Class.java:1784)
at org.codehaus.groovy.tools.GroovyStarter.rootLoader(GroovyStarter.java:100)
at org.codehaus.groovy.tools.GroovyStarter.main(GroovyStarter.java:131)
似乎它的开发人员使用了java.lang包名，这让类加载器很生气。如果它可以帮助我检查了以下几行tools.jar中找到startGroovy的内容：
208 # For Darwin, use classes.jar for TOOLS_JAR
209 TOOLS_JAR="$JAVA_HOME/lib/tools.jar"
在我的情况下JAVA_HOME是：
/Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/
更多细节：
$ which java
/usr/bin/java
$ which groovy
/Users/maksim/.sdkman/candidates/groovy/current/bin/groovy
$ echo $JAVA_HOME
/Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/
echo $CLASSPATH是空的。
$ java -version
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)