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

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

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

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

$ javac src/SamePackageWins.java && java SamePackageWins     (25.0.4.1+1-LTS)
my own Date
java.util.Date

$ javac src/SamePackageWins.java && java SamePackageWins     (27+35)
my own Date
java.util.Date

$ javac src/UnusedAmbiguity.java && java UnusedAmbiguity     (25.0.4.1+1-LTS)
no Date mentioned, no error

$ javac src/UnusedAmbiguity.java && java UnusedAmbiguity     (27+35)
no Date mentioned, no error

$ javac src/DuplicateImports.java && java DuplicateImports     (25.0.4.1+1-LTS)
[dups are fine]

$ javac src/DuplicateImports.java && java DuplicateImports     (27+35)
[dups are fine]