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Getting NPE when I run the example command, with JAVA8

1

>java -cp .;antlr-3.3-complete.jar org.antlr.Tool PLSQL3.g error(10): internal error: Can't get property indirectDelegates using method get/isIndirectDelegates from org.antlr.tool.Grammar instance : java.lang.NullPointerException java.util.Objects.requireNonNull(Unknown Source) java.util.ArrayList.removeAll(Unknown Source) org.antlr.tool.CompositeGrammar.getIndirectDelegates(CompositeGrammar.java:222) org.antlr.tool.Grammar.getIndirectDelegates(Grammar.java:2625) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)...

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