Question

I just wanna ask what is the efficient way to get the week numbers of a certain month. I have a function with month number & year as arguments, the return value of the function should be a int array which contain the week numbers of the specific month.(like following…)

public int[] getWeeksOfMonth(int month, int year){
            //what's the efficient way to implement this??
}

Answer 1

The WEEK_OF_YEAR attribute of the Calendar class can be usefull for you.

Create a new date that will be the first day of the given month. Get the week of the year for this day, let say you got start value.

Create a new date that will be the last day of the given month. Get the week of the year for this day, so now you got end value.

Finally, create a simple int[] that will contains values from start to end.