Make a SVG image with vector stroke and drop-shadow

Question

I'm trying to get drop-shadow of svg image.

I noticed that the stroke gets also blurred (I mean the vector lines are pixelized)... when I apply drop-shadow filter. Isn't it possible to keep the stroke line sharp and add drop shadow behind it??

the svg image looks like this.

the second question..

public class A{
 public void a(){
 }
}

//newer version of module
public class AVariant{
 public void a(String b){
 }
}