java面向对象--类

package test2;

class Car{
	public String PingPai;
	public String Year;
	public double Price;
	public int Num;
	
	public Car(String pingpai,String year,double price,int num){
		PingPai=pingpai;
		Year=year;
		Price=price;
		Num=num;
	}
	public void jiasu() {
		System.out.println(PingPai+"加速了");
	}
	public void shache() {
		System.out.println(PingPai+"刹车了");
	}
}

public class test2 {

	public static void main(String[] args) {
		String pingpai1="奔驰";
		String pingpai2="宝马";
		String year="1996年";
		double price=15434.156;
		int num=15454;
		Car car1=new Car(pingpai1,year,price,num);
		Car car2=new Car(pingpai2, year, price, num);
		car1.jiasu();
		car2.jiasu();
		car1.shache();
		car2.shache();
	}

}

同一个类的不同对象各自维护自己的一套属性和方法，互相不干扰