public abstract class VarInfoName { | |
public abstract <T extends Object> T accept(Visitor<T> v); | |
public abstract static class Visitor<T extends Object> {} | |
public abstract static class BooleanAndVisitor extends Visitor<Boolean> { | |
private boolean result; | |
public BooleanAndVisitor(VarInfoName name) { | |
// :: error: (argument) :: warning: (nulltest.redundant) | |
result = (name.accept(this) != null); | |
} | |
} | |
} |