java创建一个分数类

好的，关于 Java 创建一个分数类的问题，我可以为您提供以下代码：

class Fraction {
    private int numerator;
    private int denominator;

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

    public int getNumerator() {
        return numerator;
    }

    public int getDenominator() {
        return denominator;
    }

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

    public Fraction subtract(Fraction other) {
        int newDenominator = lcm(denominator, other.denominator);
        int newNumerator = numerator * (newDenominator / denominator) - other.numerator * (newDenominator / other.denominator);
        return new Fraction(newNumerator, newDenominator).simplify();
    }

    public Fraction multiply(Fraction other) {
        int newNumerator = numerator * other.numerator;
        int newDenominator = denominator * other.denominator;
        return new Fraction(newNumerator, newDenominator).simplify();
    }

    public Fraction divide(Fraction other) {
        int newNumerator = numerator * other.denominator;
        int newDenominator = denominator * other.numerator;
        return new Fraction(newNumerator, newDenominator).simplify();
    }

    public boolean equals(Fraction other) {
        return numerator * other.denominator == denominator * other.numerator;
    }

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

    private int gcd(int a, int b) {
        if (b == 0) {
            return a;
        } else {
            return gcd(b, a % b);
        }
    }

    private int lcm(int a, int b) {
        return a * b / gcd(a, b);
    }

    private Fraction simplify() {
        int gcd = gcd(numerator, denominator);
        if (gcd != 1) {
            return new Fraction(numerator / gcd, denominator / gcd);
        } else {
            return this;
        }
    }
}

这是一个基本的分数类，其中包含四则运算和一些基本操作。您可以在此基础上进行扩展和优化。希望能对您有所帮助。