http://stackoverflow.com/questions/1239579/helper-in-order-to-remove-null-reference-in-java-list import java.util.*; public class ListTest { public static void main(String[] args) { final ListiList=new ArrayList(); for ( int i = 0; i < 10; ++i ){ if ( i % 2 == 0 )iList.add(i); elseiList.add(null); } iList.remove(0); System.out.println(iList + "\tsize " + iList.size()); iList.removeAll(Collection..