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涓嬮潰鏄竴浜涘父鐢ㄧ殑Stream API鐨勪娇鐢ㄧず渚嬶細

1. 瀵归泦鍚堣繘琛岃繃婊わ細

List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
List<Integer> evenNumbers = numbers.stream()
                                    .filter(n -> n % 2 == 0)
                                    .collect(Collectors.toList());
System.out.println(evenNumbers);

2. 瀵归泦鍚堣繘琛屾槧灏勶細

List<String> words = Arrays.asList("hello", "world", "java", "stream", "api");
List<String> upperCaseWords = words.stream()
                                    .map(String::toUpperCase)
                                    .collect(Collectors.toList());
System.out.println(upperCaseWords);

3. 瀵归泦鍚堣繘琛屾帓搴忥細

List<Integer> numbers = Arrays.asList(3, 1, 4, 1, 5, 9, 2, 6, 5, 3);
List<Integer> sortedNumbers = numbers.stream()
                                      .sorted()
                                      .collect(Collectors.toList());
System.out.println(sortedNumbers);

4. 瀵归泦鍚堣繘琛岀粺璁★細

List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
IntSummaryStatistics stats = numbers.stream()
                                    .mapToInt(Integer::intValue)
                                    .summaryStatistics();
System.out.println("鏈€澶у€硷細" + stats.getMax());
System.out.println("鏈€灏忓€硷細" + stats.getMin());
System.out.println("鎬诲拰锛?quot; + stats.getSum());
System.out.println("骞冲潎鍊硷細" + stats.getAverage());

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