In many files, the import statements use wildcard to import all the classes in the packages

E.g. https://github.com/Microsoft/mssql-jdbc/blob/master/src/main/java/com/microsoft/sqlserver/jdbc/KerbAuthentication.java
import java.util.*;

It is a good practice to specify the specific classes in these imports.