import java.util.Calendar;
public class Main {
// 测试代码
public static void main(String[] args) {
Calendar cld = Calendar.getInstance();
cld.set(1999, 11, 31);//设置日期
while (true) {
cld.add(Calendar.YEAR, 100);//每一次加100都保存在cld里面
if (cld.get(Calendar.DAY_OF_WEEK) == 1) {
break;
}
}
System.out.println(cld.get(Calendar.YEAR));
}
}