I tried compiling the code
and I receive the following errors:
C3.java:6: class, interface, or enum expected
C1 o1;
^
C3.java:7: class, interface, or enum expected
C2 o2;
^
C3.java:8: class, interface, or enum expected
C3 o3;
^
3 errors
Is this is typing error, or something else?