Question

I need a function to check a date with boolean. I have a String variable that stored one date. I stored date format is that “yyyy/mm/dd”. I need to check if this variable is a valid date. If the date format is true then the function needs to return true in java. But I need something. I shouldn’t use to convert string to integer. I have wrote something.

public boolean trueDate(String date){
    String[] temp;
    temp = date.split("/");
    String year = temp[0];
    String mounth = temp[1];
    String day = temp[2];

}

What should i do?

Answer 1

public boolean trueDate(String date){
  String nums = "0123456789";
  String[] temp;
  temp = date.split("/");
  String year = temp[0];
  String month = temp[1];
  String day = temp[2];

  bool isValid = true;
  for(int i = 0; i < year.length(); i++)
  {
    if(nums.indexOf(year.charAt(i)) == -1)
    {
      isValid = false;
    }
  }

  for(int i = 0; i < month.length(); i++)
  {
    if(nums.indexOf(month.charAt(i)) == -1)
    {
      isValid = false;
    }
  }

  for(int i = 0; i < day.length(); i++)
  {
    if(nums.indexOf(day.charAt(i)) == -1)
    {
      isValid = false;
    }
  }

  return isValid;
}