用Java中的继承和数组编写一个“已知农产品的质量和体积，判断农产品属于哪类农产品”的代码

以下是Java中继承和数组编写的代码，用于判断农产品属于哪类农产品：

public class Agriculture {
    private double quality;
    private double volume;

    public Agriculture(double quality, double volume) {
        this.quality = quality;
        this.volume = volume;
    }

    public double getQuality() {
        return quality;
    }

    public double getVolume() {
        return volume;
    }
}

public class Rice extends Agriculture {
    public Rice(double quality, double volume) {
        super(quality, volume);
    }
}

public class Wheat extends Agriculture {
    public Wheat(double quality, double volume) {
        super(quality, volume);
    }
}

public class AgricultureClassifier {
    public static void main(String[] args) {
        Agriculture[] products = new Agriculture[4];
        products[0] = new Rice(0.8, 1.2);
        products[1] = new Wheat(0.7, 1.5);
        products[2] = new Rice(0.9, 1.1);
        products[3] = new Wheat(0.6, 1.8);

        for (Agriculture product : products) {
            if (product instanceof Rice) {
                System.out.println("This is rice.");
            } else if (product instanceof Wheat) {
                System.out.println("This is wheat.");
            } else {
                System.out.println("Unknown product.");
            }
        }
    }
}

以上代码中，我们定义了一个Agriculture类，它包含了农产品的质量和体积。然后我们定义了Rice和Wheat类，它们继承了Agriculture类。最后，我们定义了一个AgricultureClassifier类，它包含了一个Agriculture类型的数组，用于存储农产品。我们遍历这个数组，通过instanceof关键字判断每个农产品属于哪个类别。