2.Calendar类的使用

import java.util.Calendar;

public class Test {
    public static void main(String[] args) {
        Calendar t = Calendar.getInstance();
        System.out.println("今天是"+t.get(Calendar.YEAR)+"年"
                +(t.get(Calendar.MONTH)+1)+"月"+t.get(Calendar.DAY_OF_MONTH)+"日");
        //Calendar.DAY_OF_WEEK 中 Sunday是1
        System.out.println("今天是星期"+(t.get(Calendar.DAY_OF_WEEK)-1));
    }
}