java 显示星期

java 显示星期

比如：总天数是num,num不定的，假设num=6，今天是周二，我需要在一向列表上这样显示

周四，周五，周六，周日，昨天，今天

package com.demo;

import java.util.Calendar;

public class MainDemo {

private static final String[] WEEKS = new String[]{"周日","周一","周二","周三","周四","周五","周六"};

/**

* @param args

*/

public static void main(String[] args) {

MainDemo mainDemo = new MainDemo();

mainDemo.print(9);

}

public void print(int num){

StringBuffer sb = new StringBuffer();

Calendar calendar = Instance();

int iCurrentWeek = (Calendar.DAY_OF_WEEK);

if(num > 0){

for(int i = 0;i < num;i++){

if(i < num - 2){

if(iCurrentWeek - (num - i) >= 0){

sb.append(WEEKS[iCurrentWeek - (num - i)] + "t");

}else{

sb.append(WEEKS[iCurrentWeek - (num - i) + WEEKS.length] + "t");

}

}else{

if(i == num - 2){

sb.append("昨天t");

}else if(i == num - 1){

sb.append("今天t");

}

}

}

}

System.out.String().trim());

}

}