remove _ in names

Task/Collections/Java/collections.java

@@ -1,14 +0,0 @@
-List arrayList = new ArrayList();
-arrayList.add(new Integer(0));
-// alternative with primitive autoboxed to an Integer object automatically
-arrayList.add(0);
-
-//other features of ArrayList
-//define the type in the arraylist, you can substitute a proprietary class in the "<>"
-List<Integer> myarrlist = new ArrayList<Integer>();
-
-//add several values to the arraylist to be summed later
-int sum;
-for(int i = 0; i < 10; i++) {
-    myarrlist.add(i);
-}