设计日期类，每个日期对象都可以描述年月日信息

class Time{

private int years ;

private int month;

private int day;

public  int getYears(){

return years;

}

public void setYears(int years){

this.years = years;

}

public int getMonth(){

return month;

}

public void setMonth(int month){

this.month = month;

}

public int getDay(){

return day;

}

public void setDay(int day){

this.day = day;

}

}

 

public class TimeTest{

public static void main(String []args){

Time T = new Time();

System.out.println(" "+T.getYears()+T.getMonth()+T.getDay());

}

}

 

收获： 

1. get是有返回值的  set 无返回值