Can't we import whole package rather than importing each classess?

Question

that is using
import java.util.*;
rather than
import java.util.Iterator;
import java.util.LinkedList;
Are we making the program more complex when we import the whole package?

Answer 1

The program will not be more complex and not even bigger. The import declaration just tells the compiler: If you don't find a class in this package, search for them at the path that is declared after import.