在Java 8中如何从对象列表中获取两个属性的乘积

import java.util.Arrays;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        List<MyObject> objects = Arrays.asList(
                new MyObject(2, 3),
                new MyObject(4, 5),
                new MyObject(6, 7)
        );

        double result = objects.stream()
                .mapToDouble(obj -> obj.getProperty1() * obj.getProperty2())
                .reduce(1, (a, b) -> a * b);

        System.out.println("乘积结果：" + result);
    }
}

class MyObject {
    private int property1;
    private int property2;

    public MyObject(int property1, int property2) {
        this.property1 = property1;
        this.property2 = property2;
    }

    public int getProperty1() {
        return property1;
    }

    public int getProperty2() {
        return property2;
    }
}