When the type name is too long, in C# i can create alias like this:
using Dict = System.Collections.Generic.Dictionary;
You can't create an alias, but you can import
packages (JLS 7.5 Import Declarations) so that you don't have to fully qualify class names in that package.
import java.util.*;
import java.lang.reflect.Field;
....
Set s = ... // Set is in java.util
You can also do a static import
(guide), though this practice should be limited.
import static java.util.Arrays.asList;
...
System.out.println(asList(1, 2, 3));