上机作业5.14

package llm;

public abstract class Vehicle {
	private String brand;
	private String color;
	private double speed;

	public Vehicle(String brand, String color) {
		super();
		this.brand = brand;
		this.color = color;
	}

	public String getColor() {
		return color;
	}

	public void setColor(String color) {
		this.color = color;
	}

	public double getSpeed() {
		return speed;
	}

	public void setSpeed(double speed) {
		this.speed = speed;
	}

	public String getBrand() {
		return brand;
	}
	public void setBrand(String brand) {
		this.brand =brand;
	}

	public abstract void run();

}
package llm;

public class Car extends Vehicle {
	private int loader;

	public Car(String brand, String color, int loader) {
		super(brand, color);
		this.loader = loader;
	}

	public void run() {
		System.out.println(getColor() + "色" + getBrand() + "可载" + this.loader + "时速为" + getSpeed() + "米/小时");
	}

}
package llm;

public class VehicleText {
	public static void main(String[] args) {
		Vehicle car = new Car("Honda", "red", 2);
		car.run();
		car.setColor("black");
		car.setBrand("benz");
		car.run();	
		}
}

　

 

 

 

package llm;

public abstract class Shape {
	protected double area;
	protected double per;
	protected String color;

	public Shape() {

	}

	public Shape(String color) {
		this.color = color;
	}

	public abstract void getArea();

	public abstract void getPer();

	public abstract void showAll();
}
package llm;

public class Rectangle extends Shape {
	double width;
	double height;

	public Rectangle() {

	}

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

	public void getArea() {
		area = width * height;

	}

	public void getPer() {
	
		per = (width + height) * 2;
	}

	public void showAll() {
		
		System.out.println("矩形面积为：" + area + "，周长为：" + per+",颜色："+color);
	}

}

package llm;

public class Circle extends Shape {
	double radius;

	public Circle() {

	}

	public Circle(double radius, String color) {
		this.color = color;
		this.radius = radius;
	}

	public void getArea() {
		area = radius * radius * 3.14;
	}

	public void getPer() {
		per = 2 * radius * 3.14;
	}

	public void showAll() {

		System.out.println("圆的面积为：" + area + "，周长为：" + per + ",颜色：" + color);
	}

}
package llm;

public class PolyDemo {

	public static void main(String[] args) {
		Circle circle = new Circle(4, "red");
		Rectangle rectangle = new Rectangle(8, 9, "blue");
		circle.getArea();
		circle.getPer();
		circle.showAll();
		
		rectangle.getArea();
		rectangle.getPer();
		rectangle.showAll();

	}

}