Assignment02Rules: use PrintStream instead of System

java-feedback-rascal/src/Assignment02Rules.rsc

@@ -16,7 +16,7 @@ set[Message] allAssignment02Rules(M3 model)
   ;
 
 // There should be one class that is not the main class and not the Gallows
-// class, and this class is the only one that uses System
+// class, and this class is the only one that uses System.io, which is a PrintStream
 set[Message] a02_all_io_in_view(M3 model)
 {
   set[Message] result = {};
@@ -29,7 +29,7 @@ set[Message] a02_all_io_in_view(M3 model)
     // find all methods that use System
     set[loc] ioMethods =
       { m
-      | m <- invert(model.typeDependency)[|java+class:///java/lang/System|]
+      | m <- invert(model.typeDependency)[|java+class:///java/io/PrintStream|]
       , isMethod(m)
       };
     // find the classes to which these methods belong