class fruit {

String name;

double price;

double weight;

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public double getPrice() {

return price;

}

public void setPrice(double price) {

this.price = price;

}

public double getWeight() {

return weight;

}

public void setWeight(double weight) {

this.weight = weight;

}

}

public class Fruit extends fruit {

private double packagesfee;

public double getPackagesfee() {

return packagesfee;

}

public void setPackagesfee(double packagesfee) {

this.packagesfee = packagesfee;

}

public static void main(String[] args) {

fruit a = new fruit();

a.setName("苹果");

a.setPrice(1.98);

a.setWeight(5.0);

Fruit b = new Fruit();

b.setName("精装苹果");

b.setPrice(2.98);

b.setWeight(5.0);

b.setPackagesfee(((double) b.getPackagesfee() - (double) a.getPrice()));

System.out.println("水果名称\t水果价格(元/千克)\t水果重量(千克)\t包装费(元/千克)\t总价");

System.out.println(""

+ "------------------------------------------------------------------------------------------");

System.out.println(a.getName() + "\t" + a.getPrice() + "\t" + a.getWeight() + "\t" + "0.0\t"

+ a.getPrice() * a.getWeight());

System.out.println(b.getName() + "\t" + b.getPrice() + "\t" + b.getWeight() + "\t" + b.getPackagesfee() + "\t"

+ b.getPrice() * b.getWeight());

System.out.println(

"--------------------------------------------------------------------------------------------");

System.out.println("差价\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"

+ (b.getPrice() * b.getWeight() - a.getPrice() * a.getWeight()));

}

}