huxiaojie

摘要： package Scanner; import java.util.Scanner; public class max { public static void main(String [] args){ int[] arr=new int[3]; Scanner sc=new Scanner(Sy 阅读全文

摘要： 1.手机类的实现 package Phone; public class Demo_phone { public static void main(String[] args){ Phone phone=new Phone(); phone.brand="huawei mate30"; phone. 阅读全文