public class Fruit //创建一个Fruit类
{
private String name; //定义“水果名称”
private float price; //定义“水果价格”
private float weight; //定义“水果重量”
public String getName() //获得“水果名称”
{
return name;
}
public void setName(String name) //设置“水果名称”
{
this.name = name;
}
public float getPrice() //获得“水果价格”
{
return price;
}
public void setPrice(float price) //设置“水果价格”
{
this.price = price;
}
public float getWeight() //获得“水果重量”
{
return weight;
}
public void setWeight(float weight) //设置“水果重量”
{
this.weight = weight;
}
}
///////////////////////////////////////////////////////////////////////
public class PackagedFruit extends Fruit //创建一个PackagedFruit类继承Fruit类
{
private double packagesfee; //定义“精装水果的包装费”
public double getPackagesfee() //获得“精装水果的包装费”
{
return packagesfee;
}
public void setPackagesfee(double packagesfee) //设置“精装水果的包装费”
{
this.packagesfee = packagesfee;
}
}
/////////////////////////////////////////////////////////////////////////////////
public class Test //创建一个Test类
{
public static void main(String[] args)
{
Fruit fruit = new Fruit(); //创建fruit对象
fruit.setName("苹果"); //初始化“水果名称”
fruit.setPrice(1.98f); //初始化“水果价格”
fruit.setWeight(5.0f); //初始化“水果重量”
PackagedFruit packagedFruit = new PackagedFruit(); //创建packagedFruit对象
packagedFruit.setName("精装苹果"); //初始化“精装水果的名称”
packagedFruit.setPrice(2.98f); //初始化“精装水果的价格”
packagedFruit.setWeight(5.0f); //初始化“精装水果的重量”
packagedFruit.setPackagesfee(((float)packagedFruit.getPrice() - (float)fruit.getPrice())); ///初始化“精装水果的包装费”
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"); //提示信息
System.out.println("——————————————————————————————————————————————————————————————"); //分割线
System.out.println(fruit.getName() + "\t" + fruit.getPrice() + "\t\t" + fruit.getWeight() + "\t"
+ "\t" + "0.0" + "\t\t" + fruit.getPrice() * fruit.getWeight()); //输出结果
System.out.println(packagedFruit.getName() + "\t" + packagedFruit.getPrice() + "\t\t" + packagedFruit.getWeight()
+ "\t\t" + packagedFruit.getPackagesfee() + "\t\t"
+ packagedFruit.getPrice() * packagedFruit.getWeight()); //输出结果
System.out.println("——————————————————————————————————————————————————————————————"); //分割线
System.out.println("差价\t\t\t\t\t\t\t"
+ (packagedFruit.getPrice() * packagedFruit.getWeight() - fruit.getPrice() * fruit.getWeight())); //输出结果
}
}