Unable to run the project

[shivaprasad573]

I have downloaded and extracted the zip then i got a directory "plsql-parser-master". There i have ran "mvn install" but it was throwing error as [INFO] error(10): internal error: Can't get property indirectDelegates using method get/isIndirectDelegates from org.antlr.tool.Grammar instance : java.lang.NullPointerException [INFO] java.util.Objects.requireNonNull(Objects.java:203) [INFO] java.util.ArrayList.removeAll(ArrayList.java:689) [INFO] org.antlr.tool.CompositeGrammar.getIndirectDelegates(CompositeGrammar.java:222) [INFO] org.antlr.tool.Grammar.getIndirectDelegates(Grammar.java:2625) [INFO] sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [INFO] sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [INFO] sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [INFO] java.lang.reflect.Method.invoke(Method.java:498) [INFO] org.antlr.stringtemplate.language.ASTExpr.invokeMethod(ASTExpr.java:564) [INFO] org.antlr.stringtemplate.language.ASTExpr.rawGetObjectProperty(ASTExpr.java:515) [INFO] org.antlr.stringtemplate.language.ASTExpr.getObjectProperty(ASTExpr.java:417) [INFO] org.antlr.stringtemplate.language.ActionEvaluator.attribute(ActionEvaluator.java:351) [INFO] org.antlr.stringtemplate.language.ActionEvaluator.expr(ActionEvaluator.java:136) [INFO] org.antlr.stringtemplate.language.ActionEvaluator.templateApplication(ActionEvaluator.java:216) [INFO] org.antlr.stringtemplate.language.ActionEvaluator.expr(ActionEvaluator.java:126) [INFO] org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:84) [INFO] org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:149) [INFO] org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:705) [INFO] org.antlr.stringtemplate.language.ASTExpr.writeTemplate(ASTExpr.java:750) [INFO] org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:680) [INFO] org.antlr.stringtemplate.language.ASTExpr.writeAttribute(ASTExpr.java:660) [INFO] org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:86) [INFO] org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:149) [INFO] org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:705) [INFO] org.antlr.stringtemplate.language.ASTExpr.writeTemplate(ASTExpr.java:750) [INFO] org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:680) [INFO] org.antlr.stringtemplate.language.ASTExpr.writeAttribute(ASTExpr.java:660) [INFO] org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:86) [INFO] org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:149) [INFO] org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:705) [INFO] org.antlr.stringtemplate.language.ASTExpr.writeTemplate(ASTExpr.java:750) [INFO] org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:680) [INFO] org.antlr.stringtemplate.language.ASTExpr.writeAttribute(ASTExpr.java:660) [INFO] org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:86) [INFO] org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:149) [INFO] org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:705) [INFO] org.antlr.codegen.CodeGenerator.write(CodeGenerator.java:1279) [INFO] org.antlr.codegen.Target.genRecognizerFile(Target.java:93) [INFO] org.antlr.codegen.CodeGenerator.genRecognizer(CodeGenerator.java:464) [INFO] org.antlr.Tool.generateRecognizer(Tool.java:642) [INFO] org.antlr.Tool.generateRecognizer(Tool.java:652) [INFO] org.antlr.Tool.process(Tool.java:455) [INFO] org.antlr.Tool.main(Tool.java:89) Please help me how can i resolve this. and run this project

[cesarochoa2006]

for me worked changing maven target and source to 1.7, the changing version of antlr to 3.4 in pom.xml Then executed the command: mvn clean install package did the work, but took a lot of time.