37 lines
1011 B
Java
37 lines
1011 B
Java
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package stream;
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import lombok.Getter;
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import java.util.Arrays;
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import java.util.Comparator;
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import java.util.List;
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import java.util.Optional;
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import java.util.stream.Collectors;
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public class StreamExample17 {
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public static void main(String[] args) {
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List<Person> people = Arrays.asList(
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new Person("Alice", 30),
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new Person("Bob", 25),
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new Person("Charlie", 35)
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);
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// 使用 Collectors.minBy 找到年龄最小的人
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Optional<Person> youngest = people.stream()
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.collect(Collectors.minBy(Comparator.comparingInt(Person::getAge)));
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youngest.ifPresent(person ->
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System.out.println("Youngest Person: " + person.getName() + ", Age: " + person.getAge()));
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}
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@Getter
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static class Person {
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private final String name;
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private final int age;
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public Person(String name, int age) {
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this.name = name;
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this.age = age;
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}
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}
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}
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