提高代码复用性，提高代码复用,提高代码复用性packa

提高代码复用性，提高代码复用,提高代码复用性packa

提高代码复用性

package car;public class Car {    String color;    int number;    void run(){        System.out.println(color+"::"+number);    }}class carDemo{    public static void main(String[] args)    {        Car c = new Car();        show(c);    }    /*     * 封装功能     * Car c = new Car();     * Car c1 = new Car();     * */    public static void show(Car cc)    {        cc.color = "red";        cc.number = 4;        cc.run();    }}