使用Java streams的进程字符串

List<String> filteredStrings = strings.stream()
                                      .filter(s -> s.length() > 5)
                                      .collect(Collectors.toList());

List<String> uppercaseStrings = strings.stream()
                                       .map(String::toUpperCase)
                                       .collect(Collectors.toList());

List<String> sortedStrings = strings.stream()
                                    .sorted(Comparator.comparingInt(String::length))
                                    .collect(Collectors.toList());

Optional<String> foundString = strings.stream()
                                      .filter(s -> s.startsWith("abc"))
                                      .findFirst();