id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc
5	bnfc demo fails to build on Java 1.6	dpawson		"Looking at bnfc, I tried the 'make' the calc.cf example.
Fails on multiple errors.
Shown below.

regards 

javac -sourcepath . calc/Absyn/Exp.java calc/Absyn/EAdd.java calc/Absyn/ESub.java calc/Absyn/EMul.java calc/Absyn/EDiv.java calc/Absyn/EInt.java
----------
1. ERROR in calc/Absyn/Exp.java (at line 4)
	public abstract <R,A> R accept(Exp.Visitor<R,A> v, A arg);
	                 ^^^
Syntax error, type parameters are only available if source level is 5.0
----------
2. ERROR in calc/Absyn/Exp.java (at line 4)
	public abstract <R,A> R accept(Exp.Visitor<R,A> v, A arg);
	                      ^
R cannot be resolved to a type
----------
3. ERROR in calc/Absyn/Exp.java (at line 4)
	public abstract <R,A> R accept(Exp.Visitor<R,A> v, A arg);
	                                           ^^^
Syntax error, parameterized types are only available if source level is 5.0
----------
4. ERROR in calc/Absyn/Exp.java (at line 4)
	public abstract <R,A> R accept(Exp.Visitor<R,A> v, A arg);
	                                           ^
R cannot be resolved to a type
----------
5. ERROR in calc/Absyn/Exp.java (at line 4)
	public abstract <R,A> R accept(Exp.Visitor<R,A> v, A arg);
	                                             ^
A cannot be resolved to a type
----------
6. ERROR in calc/Absyn/Exp.java (at line 4)
	public abstract <R,A> R accept(Exp.Visitor<R,A> v, A arg);
	                                                   ^
A cannot be resolved to a type
----------
7. ERROR in calc/Absyn/Exp.java (at line 5)
	public interface Visitor <R,A> {
	                          ^^^
Syntax error, type parameters are only available if source level is 5.0
----------
8. ERROR in calc/Absyn/Exp.java (at line 6)
	public R visit(calc.Absyn.EAdd p, A arg);
	       ^
R cannot be resolved to a type
----------
9. ERROR in calc/Absyn/Exp.java (at line 6)
	public R visit(calc.Absyn.EAdd p, A arg);
	                                  ^
A cannot be resolved to a type
----------
10. ERROR in calc/Absyn/Exp.java (at line 7)
	public R visit(calc.Absyn.ESub p, A arg);
	       ^
R cannot be resolved to a type
----------
11. ERROR in calc/Absyn/Exp.java (at line 7)
	public R visit(calc.Absyn.ESub p, A arg);
	                                  ^
A cannot be resolved to a type
----------
12. ERROR in calc/Absyn/Exp.java (at line 8)
	public R visit(calc.Absyn.EMul p, A arg);
	       ^
R cannot be resolved to a type
----------
13. ERROR in calc/Absyn/Exp.java (at line 8)
	public R visit(calc.Absyn.EMul p, A arg);
	                                  ^
A cannot be resolved to a type
----------
14. ERROR in calc/Absyn/Exp.java (at line 9)
	public R visit(calc.Absyn.EDiv p, A arg);
	       ^
R cannot be resolved to a type
----------
15. ERROR in calc/Absyn/Exp.java (at line 9)
	public R visit(calc.Absyn.EDiv p, A arg);
	                                  ^
A cannot be resolved to a type
----------
16. ERROR in calc/Absyn/Exp.java (at line 10)
	public R visit(calc.Absyn.EInt p, A arg);
	       ^
R cannot be resolved to a type
----------
17. ERROR in calc/Absyn/Exp.java (at line 10)
	public R visit(calc.Absyn.EInt p, A arg);
	                                  ^
A cannot be resolved to a type
----------
----------
18. ERROR in calc/Absyn/EAdd.java (at line 8)
	public <R,A> R accept(calc.Absyn.Exp.Visitor<R,A> v, A arg) { return v.visit(this, arg); }
	        ^^^
Syntax error, type parameters are only available if source level is 5.0
----------
19. ERROR in calc/Absyn/EAdd.java (at line 8)
	public <R,A> R accept(calc.Absyn.Exp.Visitor<R,A> v, A arg) { return v.visit(this, arg); }
	                                             ^^^
Syntax error, parameterized types are only available if source level is 5.0
----------
----------
20. ERROR in calc/Absyn/ESub.java (at line 8)
	public <R,A> R accept(calc.Absyn.Exp.Visitor<R,A> v, A arg) { return v.visit(this, arg); }
	        ^^^
Syntax error, type parameters are only available if source level is 5.0
----------
21. ERROR in calc/Absyn/ESub.java (at line 8)
	public <R,A> R accept(calc.Absyn.Exp.Visitor<R,A> v, A arg) { return v.visit(this, arg); }
	                                             ^^^
Syntax error, parameterized types are only available if source level is 5.0
----------
----------
22. ERROR in calc/Absyn/EMul.java (at line 8)
	public <R,A> R accept(calc.Absyn.Exp.Visitor<R,A> v, A arg) { return v.visit(this, arg); }
	        ^^^
Syntax error, type parameters are only available if source level is 5.0
----------
23. ERROR in calc/Absyn/EMul.java (at line 8)
	public <R,A> R accept(calc.Absyn.Exp.Visitor<R,A> v, A arg) { return v.visit(this, arg); }
	                                             ^^^
Syntax error, parameterized types are only available if source level is 5.0
----------
----------
24. ERROR in calc/Absyn/EDiv.java (at line 8)
	public <R,A> R accept(calc.Absyn.Exp.Visitor<R,A> v, A arg) { return v.visit(this, arg); }
	        ^^^
Syntax error, type parameters are only available if source level is 5.0
----------
25. ERROR in calc/Absyn/EDiv.java (at line 8)
	public <R,A> R accept(calc.Absyn.Exp.Visitor<R,A> v, A arg) { return v.visit(this, arg); }
	                                             ^^^
Syntax error, parameterized types are only available if source level is 5.0
----------
----------
26. ERROR in calc/Absyn/EInt.java (at line 8)
	public <R,A> R accept(calc.Absyn.Exp.Visitor<R,A> v, A arg) { return v.visit(this, arg); }
	        ^^^
Syntax error, type parameters are only available if source level is 5.0
----------
27. ERROR in calc/Absyn/EInt.java (at line 8)
	public <R,A> R accept(calc.Absyn.Exp.Visitor<R,A> v, A arg) { return v.visit(this, arg); }
	                                             ^^^
Syntax error, parameterized types are only available if source level is 5.0
"	enhancement	new	blocker	Java back-end