Calendar对象

1.简单获取年月日

代码示例：

package others;

import java.util.Calendar;

public class CalenderDemo1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Calendar c = Calendar.getInstance();
        //得到年
        sop(c.get(Calendar.YEAR)+"年");
        sop(c.get(Calendar.MONTH)+1+"月");
        sop(c.get(Calendar.DATE)+"号");
        
        

    }
    public static void sop(Object obj){
        System.out.println(obj);
    }

}

2.由于获取月总是加1，可以用数组下标来实现（查表法获取月，星期）：

代码示例：

package others;

import java.util.Calendar;

public class CalenderDemo1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Calendar c = Calendar.getInstance();
        //查表法获得月
        String [] months = {"一月","二月","三月","四月",
                            "五月","六月","七月","八月",
                            "九月","十月","十一月","十二月"};
        String[] weeks = {"","星期日","星期一","星期二","星期三","星期四","星期五","星期六"};
        int index = c.get(Calendar.MONTH);
        int index2 = c.get(Calendar.DAY_OF_WEEK);
        sop(c.get(Calendar.YEAR)+"年");
        sop(months[index]);
        sop(c.get(Calendar.DATE)+"号");
        sop(weeks[index2]);
        
        

    }
    public static void sop(Object obj){
        System.out.println(obj);
    }

}

3.自定义的时间：

代码示例：

package others;

import java.util.Calendar;

public class CalendarDemo2 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Calendar c = Calendar.getInstance();
        //此时设置月份的时候注意下标和月份的比配，比如：0代表的是1月
        c.set(2018, 3, 8);
        //在此设置的月份上减1个月
        c.add(Calendar.MONTH, -1);
        printCalendar(c);

    }

    public static void printCalendar(Calendar c) {
        String[] months = { "一月", "二月", "三月", "四月", "五月", "六月", "七月", "八月",
                "九月", "十月", "十一月", "十二月" };
        String[] weeks = { "", "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
        int index = c.get(Calendar.MONTH);
        int index2 = c.get(Calendar.DAY_OF_WEEK);
        sop(c.get(Calendar.YEAR) + "年");
        sop(months[index]);
        sop(c.get(Calendar.DATE) + "号");
        sop(weeks[index2]);
    }
    public static void sop(Object obj){
        System.out.println(obj);
    }

}