编程定义一个汽车类Car

编程定义一个汽车类Car
要求如下:
(1)定义成员变量:品牌(String brand),价格(double price),颜色(String color),销售日期(Calendar date);
(2)定义无参构造方法和带参构造方法,其中无参构造方法调用带参构造方法来初始化类中的变量;
(3)定义上述成员变量所对应的getXxx()/setXxx()方法;以及一个显示所有成员信息的toString()方法;
(4)定义一个测试类CarDemo,使用无参构造方法创建Car对象car1,调用toString()方法显示car1对象的信息,使用带参构造方法创建Car对象car2,调用toString()方法显示car2对象的信息。测试结果如下:
编程定义一个汽车类Car_第1张图片
代码如下:
CarDemo类

import java.util.GregorianCalendar;

public class CarDemo {

	public static void main(String[] args) {
		Car car1=new  Car();
		System.out.println(car1);
		System.out.println("------------------");
		Car car2=new Car("奥迪", "黑色", 38, new GregorianCalendar(2022,7,8));
		System.out.println(car2);

	}

}

Car类:

 import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

public class Car {
	private String name;
	private String sex;
	private double price;
	private  Calendar  date;
	public Car() {
		this("奥拓","土豪金",3.8,new GregorianCalendar());
	}
	public Car(String name, String sex, double price, Calendar date) {
		super();
		this.name = name;
		this.sex = sex;
		this.price = price;
		this.date = date;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	public double getPrice() {
		return price;
	}
	public void setPrice(double price) {
		this.price = price;
	}
	public Calendar getDate() {
		return date;
	}
	public void setDate(Calendar date) {
		this.date = date;
	}
	@Override
	public String toString() {
		//方式1
//		DateFormat sdf = new SimpleDateFormat("yyyy年MM月dd日");
//		return "品牌:" + name + "\n颜色:" + sex + "\n价格:" + price + "万\n销售日期:" +sdf.format(date) ;
		//方式2
		return "品牌:" + name + "\n颜色:" + sex + "\n价格:" + price + "万\n销售日期:" 
		          +String.format("%tY年%, date) ;
	}
	
	
}








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