Reducing the amount of classes loaded

Is it true that the amount of classes loaded can be reduced by having exclusive import statements in the code, as apposed to general package imports.
eg import <package path>.<classname> as aposed to import <package path>.*

all and only classes that are instantiated or referenced will be loaded
specifying individual classes can help prevent name conflicts (ie 2 classes with the same name in different packages)
importing whole packages will slow the compiler by a very very tiny ammount

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