List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5, 6);
List<Integer> evenNumbers = numbers.stream()
.filter(n -> n % 2 == 0)
.collect(Collectors.toList());
List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5, 6);
int sum = numbers.stream()
.reduce(0, (a, b) -> a + b);
List<Person> persons = Arrays.asList(
new Person("Tom", 25),
new Person("John", 28),
new Person("Alice", 25)
);
Map<Integer, List<Person>> groupedPersons = persons.stream()
.collect(Collectors.groupingBy(Person::getAge));
public class FluentCollectionExample {
public static void main(String[] args) {
List<String> words = Arrays.asList("hello", "world", "java", "programming");
List<String> capitalizedWords = words.stream()
.filter(word -> word.length() > 5)
.map(String::toUpperCase)
.collect(Collectors.toList());
System.out.println(capitalizedWords);
}
}
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
</dependencies>
