十二星座计算

public static String star(int month, int day) {  String star = "";  if (month == 1 && day >= 20 || month == 2 && day <= 18) {   star = "水瓶座";  }  if (month == 2 && day >= 19 || month == 3 && day <= 20) {   star = "双鱼座";  }  if (month == 3 && day >= 21 || month == 4 && day <= 19) {   star = "白羊座";  }  if (month == 4 && day >= 20 || month == 5 && day <= 20) {   star = "金牛座";  }  if (month == 5 && day >= 21 || month == 6 && day <= 21) {   star = "双子座";  }  if (month == 6 && day >= 22 || month == 7 && day <= 22) {   star = "巨蟹座";  }  if (month == 7 && day >= 23 || month == 8 && day <= 22) {   star = "狮子座";  }  if (month == 8 && day >= 23 || month == 9 && day <= 22) {   star = "处女座";  }  if (month == 9 && day >= 23 || month == 10 && day <= 22) {   star = "天秤座";  }  if (month == 10 && day >= 23 || month == 11 && day <= 21) {   star = "天蝎座";  }  if (month == 11 && day >= 22 || month == 12 && day <= 21) {   star = "射手座";  }  if (month == 12 && day >= 22 || month == 1 && day <= 19) {   star = "摩羯座";  }  return star; }public static void main(String[] args) {int month=6;int day=29;String s=star(month,day);System.out.println(s);}