...包含年、月、日三个成员变量,编写4个重载构造器,分别具有参数列_百 ...答:/ MyDate.java / public class MyDate{ private int year,month,day;MyDate(){ this(2007,1,1);} MyDate(int year){ this(year,1,1);} MyDate(int year,int month){ this(year,month,1);} MyDate(int year,int month,int day){ this.year=year;this.month=month;this.day=day;}...