$ javac broken/AmbiguousDate.java     (25.0.4.1+1-LTS)
broken/AmbiguousDate.java:6: error: reference to Date is ambiguous
        Date d = new Date(0L);
        ^
  both class java.sql.Date in java.sql and class java.util.Date in java.util match
broken/AmbiguousDate.java:6: error: reference to Date is ambiguous
        Date d = new Date(0L);
                     ^
  both class java.sql.Date in java.sql and class java.util.Date in java.util match
2 errors

$ javac broken/AmbiguousDate.java     (27+35)
broken/AmbiguousDate.java:6: error: reference to Date is ambiguous
        Date d = new Date(0L);
        ^
  both class java.sql.Date in java.sql and class java.util.Date in java.util match
broken/AmbiguousDate.java:6: error: reference to Date is ambiguous
        Date d = new Date(0L);
                     ^
  both class java.sql.Date in java.sql and class java.util.Date in java.util match
2 errors

$ javac broken/AmbiguousList.java     (25.0.4.1+1-LTS)
broken/AmbiguousList.java:6: error: reference to List is ambiguous
        List<String> names = new ArrayList<>();
        ^
  both class java.awt.List in java.awt and interface java.util.List in java.util match
1 error

$ javac broken/AmbiguousList.java     (27+35)
broken/AmbiguousList.java:6: error: reference to List is ambiguous
        List<String> names = new ArrayList<>();
        ^
  both class java.awt.List in java.awt and interface java.util.List in java.util match
1 error

$ javac src/FixedDate.java && java FixedDate     (25.0.4.1+1-LTS)
java.util.Date
java.sql.Date

$ javac src/FixedDate.java && java FixedDate     (27+35)
java.util.Date
java.sql.Date