class Date
{
    int y,m,d;
    Date(int year,int mo,int day)
    {
        y=year;
        m=mo;
        d=day;
    }
    
    boolean isyear()
    {
        return (y%400==0 ) | (y%100!=0) & (y%4==0);
    }

    void pri()
    {
        System.out.println("计算润年的方法 date "+y+"-"+m+"-"+d);
    }
}

public class Date_ep
{
    public static void main(String args[])
    {
        Date a = new Date(2002,8,20);
        a.pri();
        System.out.println(a.y+" 是 "+a.isyear());
    }
}