10. Modern Java: Streams, Lambdas & Optional for QA

Streams & Lambdas for Test Automation

import java.util.*;
import java.util.stream.Collectors;
List<String> rawTexts = Arrays.asList("  Product A ", " Product B", "   ");
// Clean and filter empty items in one pipeline:
List<String> cleanTitles = rawTexts.stream()
    .map(String::trim)
    .filter(t -> !t.isEmpty())
    .collect(Collectors.toList());
// Find first matching element safely with Optional:
Optional<String> match = cleanTitles.stream()
    .filter(t -> t.contains("Product A"))
    .findFirst();
if (match.isPresent()) {
    System.out.println("Found target product: " + match.get());
}