y雪💗

摘要：package yichang; public class Yichang { public static void main(String[] args) {point p1=new point(1,3);point p2=new point(1,2);point p3=new point(1,1 阅读全文

摘要：package paixu; public class yuanzhuiti implements Area,tiji{ double r; double h; private double length; public yuanzhuiti(double r,double h,double l) 阅读全文

摘要：package java;public class Person { public String name; public String birthday; public String province,city; public int count; public Person(String nam 阅读全文