Getting NPE when I run the example command, with JAVA8

[atatous]

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)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
org.antlr.stringtemplate.language.ASTExpr.invokeMethod(ASTExpr.java:564)
org.antlr.stringtemplate.language.ASTExpr.rawGetObjectProperty(ASTExpr.java:515)
org.antlr.stringtemplate.language.ASTExpr.getObjectProperty(ASTExpr.java:417)
org.antlr.stringtemplate.language.ActionEvaluator.attribute(ActionEvaluator.java:351)
org.antlr.stringtemplate.language.ActionEvaluator.expr(ActionEvaluator.java:136)
org.antlr.stringtemplate.language.ActionEvaluator.templateApplication(ActionEvaluator.java:216)
org.antlr.stringtemplate.language.ActionEvaluator.expr(ActionEvaluator.java:126)
org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:84)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:149)
org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:705)
org.antlr.stringtemplate.language.ASTExpr.writeTemplate(ASTExpr.java:750)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:680)
org.antlr.stringtemplate.language.ASTExpr.writeAttribute(ASTExpr.java:660)
org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:86)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:149)
org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:705)
org.antlr.stringtemplate.language.ASTExpr.writeTemplate(ASTExpr.java:750)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:680)
org.antlr.stringtemplate.language.ASTExpr.writeAttribute(ASTExpr.java:660)
org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:86)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:149)
org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:705)
org.antlr.stringtemplate.language.ASTExpr.writeTemplate(ASTExpr.java:750)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:680)
org.antlr.stringtemplate.language.ASTExpr.writeAttribute(ASTExpr.java:660)
org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:86)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:149)
org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:705)
org.antlr.stringtemplate.language.ASTExpr.writeTemplate(ASTExpr.java:750)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:680)
org.antlr.stringtemplate.language.ASTExpr.writeAttribute(ASTExpr.java:660)
org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:86)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:149)
org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:705)
org.antlr.codegen.CodeGenerator.write(CodeGenerator.java:1279)
org.antlr.codegen.Target.genRecognizerFile(Target.java:93)
org.antlr.codegen.CodeGenerator.genRecognizer(CodeGenerator.java:464)
org.antlr.Tool.generateRecognizer(Tool.java:642)
org.antlr.Tool.process(Tool.java:455)
org.antlr.Tool.main(Tool.java:89)

[developeron29]

Hey guys,

The project is unmaintained

It would be supported by the java version from four years ago

Contributions are welcome!