求大神解释一下，哪里错了

public class HelloWorld {
    public static void main(String[] args) {
   String today="日";
  if (today.equals("一")){
      System.out.println("吃包子");
  }else if(today.equals("三")){
      System.out.println("吃包子");
  }else if(today.equals("五")){
      System.out.println("吃包子");
  }else if(today.equals("日")){
      System.out.println("吃主席套餐");
  }else {System.out.println("吃油条");