Java分数计算器reduce方法

import java.util.ArrayList;
import java.util.List;

public class FractionCalculator {
    public static void main(String[] args) {
        List<Fraction> fractions = new ArrayList<>();
        fractions.add(new Fraction(1, 2));
        fractions.add(new Fraction(1, 4));
        fractions.add(new Fraction(1, 8));

        Fraction sum = fractions.stream()
                .reduce(new Fraction(0, 1), (a, b) -> a.add(b));

        System.out.println("Sum: " + sum);
    }
}

class Fraction {
    private int numerator;
    private int denominator;

    public Fraction(int numerator, int denominator) {
        this.numerator = numerator;
        this.denominator = denominator;
    }

    public Fraction add(Fraction other) {
        int newNumerator = this.numerator * other.denominator + other.numerator * this.denominator;
        int newDenominator = this.denominator * other.denominator;
        return new Fraction(newNumerator, newDenominator);
    }

    @Override
    public String toString() {
        return numerator + "/" + denominator;
    }
}