frog:~/gjc-work $ cat -n T.java
     1 class Outer<T> {
     2 class Inner<U extends Number> {
     3 U u;
     4
     5 void set(U u) {
     6 this.u=u;
     7 }
     8 }
     9
    10 public static void main(String[] args) {
    11 (new Outer<Object>()).new Inner().set(new Integer(2));
    12 // (new Outer<Object>()).new Inner().set("toto");
    13 }
    14 }
frog:~/gjc-work $ newjavac -gj T.java
T.java:11: unexpected type
required: class, package
found : value
      (new Outer<Object>()).new Inner().set(new Integer(2));
                                ^
1 error
frog:~/gjc-work $