I want to fetch average of data between a date range on a portal

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i want to fetch average of data between a date range on a portal.... if days between that date range is greater than 20 days and less than 60 so display average of data in weekly format(average data of each week) if it is more than 60 days so display in monthly format

What I have tried:

public void getweeklyVoilations(KeyValueDto key,String startDate , String endDate) {

LocalDate startDate1 = LocalDate.parse(startDate);
LocalDate endDate1 = LocalDate.parse(endDate);

Period period = Period.between(startDate1, endDate1);

int days = period.getDays();
int voilation[];
float value;
if(days>20 && days<60) {
for((days%7)=0;(days%7)<7;days++) {
value= value+voilation[i]

}

Posted 26-Aug-21 5:22am

yash wadaskar

Updated 26-Aug-21 6:27am

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Richard MacCutchan 26-Aug-21 12:08pm

What is the problem?

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OriginalGriff · Answer 1 · 2021-08-26T06:27:00

First off, why are you passing strings containing dates? If they fail to parse, there is no way to be "graceful" about it, or specific in what problem gets reported to the user.

Assuming that the strings are user entered dates, you need to parse them to a Date value as soon as possible, before you code loses any direct contact with the user settings. At that point you can report problems and get them fixed before going any further. From that point on, you are using native date values and all your code gets simpler.

Then, how do you expect a reasonable value when violation has no elements, or values, and i is not declared or changed in any way ...

To be honest, that looks like it was thrown together with no thought at all in the hope that somebody - anybody - would do the actual task for you ...