十一周上机

public  class Vehicle {
public String brand;
public String color;
public double speed=0;
void setVehicle(String brand,String color) {
    this.brand=brand; 
    this.color=color;    
}
void access(String brand,String color,double speed) {
    this.brand=brand;
    this.color=color;
    this.speed=speed;
}
void run() {
    System.out.println("该汽车的品牌为："+this.brand+"颜色为:"+this.color+"速度为"+this.speed);
}
}

public class VehicleTest {
public static void main(String args[]) {
    Vehicle c;
    c=new Vehicle();
    c.setVehicle("benz", "yellow");
    c.run();
    c.access("benz", "black", 300);
    c.run();
}
}

public class Car extends Vehicle {
    int loader;
    void access(String brand,String color,double speed,int loader) {
        this.brand=brand;
        this.color=color;
        this.speed=speed;
        this.loader=loader;
    }
    void run() {
        System.out.println("该汽车的品牌为："+this.brand+"颜色为"+this.color+"速度为"+this.speed+"核载人数"+this.loader);;
    }
}

public class Test {
public static void main(String args[]) {
    Car c;
    c=new Car();
    c.access("Honda", "red", 300, 2);
    c.run();
}
}

package pika;

public abstract class Shape {
    private double area;
    private double per;
    private String color;
    public Shape() {
        super();
    }
    public Shape(String color) {
        super();
        this.color = color;
    }
    public abstract double getArea() ;

    public abstract double getPer();

    public abstract String showAll() ;
    
    public void getColor(String color) {
        this.color=color;
    }
    
}

package pika;

public class Rectangle extends Shape{
    private int Width;
    private int height;
    
    public Rectangle() {
        super();
    }

    public Rectangle(int width, int height ,String color) {
        super();
        Width = width;
        this.height = height;
        
    }

    @Override
    public double getArea() {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public double getPer() {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public String showAll() {
        // TODO Auto-generated method stub
         String a ="周长是"+(Width+height)*2+"面积是"+Width*height;
        return a;
    }

}

package pika;

public class Circle extends Shape {
    private int radius;
    
    public Circle(int radius) {
        super();
        this.radius = radius;
    }

    public Circle(String color) {
        super();
    }

    @Override
    public double getArea() {
        // TODO Auto-generated method stub
        return radius*radius*3.14;
    }

    @Override
    public double getPer() {
        // TODO Auto-generated method stub
        return 2*3.14*radius;
    }

    @Override
    public String showAll() {
        // TODO Auto-generated method stub
        String a ="周长是"+2*3.14*radius+"面积是"+radius*radius*3.14;
        return a;
    }
    
}

package pika;

public class hello {
    public static void main(String[] args) {
        Circle c = new Circle(5);
        Rectangle r = new Rectangle(5,5,"baise");
        System.out.println(c.showAll());
        System.out.println(r.showAll());
    }
}