Java 基础篇：第八章：接口练习_名的粉”写一个类:class wumingfen 要求:有三个属性:面码:string thema

public class WuMingFen {

    String theMa;

    int quantity;

    boolean lookSoup;

    public WuMingFen() { // 无参构造器

    }

    public WuMingFen(String theMa, int quantity, boolean lookSoup) { // 有参构造器

       this.theMa = theMa;

       this.quantity = quantity;

       this.lookSoup = lookSoup;

    }

    public WuMingFen(String theMa, int quantity) { // 有参构造器

       this.theMa = theMa;

       this.quantity = quantity;

    }

    public void check() {

       System.out.println("theMa:" + theMa + ",quantity:" + quantity

              + ",lookSoup:" + lookSoup);

    }

}

public class MyTest {

    public static void main(String[] args) {

       // 第一个要求

       WuMingFen wumingfen1 = new WuMingFen("牛肉", 3, true);

       wumingfen1.check();

       // 第二个要求

       WuMingFen wumingfen2 = new WuMingFen("牛肉", 2);

       wumingfen2.check();

       // 第三个要求

       WuMingFen wumingfen3 = new WuMingFen();

       wumingfen3.theMa = "酸辣面";

       wumingfen3.quantity = 2;

       wumingfen3.lookSoup = true;

       wumingfen3.check();

    }

}

public class Auto {

    int number;// 轮胎个数

    String color;

    double weight;

    double speed;

    public Auto() {

    }

    public Auto(int number, String color, double weight, double speed) {

       this.number = number;

       this.color = color;

       this.weight = weight;

       this.speed = speed;

    }

    public void speedUp() {

       System.out.println("车子加速！！！！");

    }

    public void speedDown() {

       System.out.println("车子减速！！！！");

    }

    public void stop() {

       System.out.println("车子停止！！！！");

    }

}

public class Car extends Auto {

    String airCondition;

    String cd;

    public Car() {

    }

    public Car(String airCondition, String cd, int number, String color,

           double weight, double speed) {

       super(number, color, weight, speed); // 父类有参构造器

       this.airCondition = airCondition;

       this.cd = cd;

    }

    public void speedUp() {

       System.out.println("小汽车加速！！！！");

    }

    public void speedDown() {

       System.out.println("小汽车减速！！！！");

    }

}

public class MyTest {

    public static void main(String[] args) {

       Car car = new Car("海尔", "VCD/DVD/DVCD", 4, "red", 2000.00, 0.0);

       car.speedDown();

       car.speedUp();

       car.stop();

    }

}

public abstract class Vehicle {

         public abstract void NoOfWheels();

}

public class Car extends Vehicle {

         public void NoOfWheels() {

                   System.out.println("四轮车！！！！");

         }

}

public class Motorbike extends Vehicle {

       public void NoOfWheels() {

                 System.out.println("双轮车!!!!");

       }

}

public class Main {

         public static void main(String[] args) {

                   Vehicle Car=new Car();  //多态，向上转型

                   Car.NoOfWheels();

                   Vehicle Motorbike=new Motorbike();

                   Motorbike.NoOfWheels();

         }

}