学习心得总结

 

 

 

 

 

 

 

package Demo0124;

public class Phone {

        String brand;

        Double price;

        public void show(){

            System.out.println("品牌:" + brand + ",价格:" + price);

        }

    public static void main(String[] args) {

            Phone phone = new Phone();

            phone.show();

            phone.brand = "Nokia";

            phone.price = 598.5;

            phone.show();

    }

}