How to cut the Java of each loop in half?

I'm working a lot for each loop in Java I'm using them to "draw" every class of my object, but it requires a lot of memory, so I want to reduce it by half. Is there a way for each loop instead of a complete list?

for(Tile tile: tiles){
tile.draw();
}

I want:

for(Tile tile: (half of)tiles){
    tile.draw();
}

Is it possible or do I just need to get the length of the tile and break the cycle when it reaches the number?

Solution

Now that you have clarified that you have an ArrayList, you can use the sublist function to get the view of the first half of the list

for(Tile tile: tiles.subList(0,tiles.size()/2){
  tile.draw();
}

This uses foreach loops and is very concise and readable code

Because the sublist is only a view of the original list, there is no penalty to copy to the new list