Java, Cloud Cost Optimization, Programming, Technology, DevOps.
items = new ArrayList<>(); for (int i = 0; i < 1000000; i++) { items.add("Item" + i); } // Inefficient: Multiple intermediate collections List<String> filteredItems = items.stream() .filter(item -> item.startsWith("Item")) .map(String::toUpperCase) .collect(Collectors.toList()); // Optimized: