if、switch、Calendar、实现星期几操作

package wzt;import java.util.Calendar;public class Sw1 {public static void main(String[] args) {Calendar instance = Calendar.getInstance();int i = instance.get(Calendar.DAY_OF_WEEK);String wk="";if(i==2){wk="星期一";}else {if(i==3){wk="星期二";} else {if(i==4){wk="星期三";}else {if (i==5){wk="星期四";}else {if (i==6){wk="星期五";}else {if (i==7){wk="星期六";}else {wk="星期日";}}}}}}System.out.println(wk);switch (i) {case 2:wk="星期一";break;case 3:wk="星期二";break;case 4:wk="星期三";break;case 5:wk="星期四";break;case 6:wk="星期五";break;case 7:wk="星期六";break;default:wk="星期日";break;}System.out.println(wk);}
}