Name 

Description 

 

check 

Checks for valid month and year. 

 

deleteContents 

Zeroes month and year. 

 

getMonth 

Returns month of year. 

 

getMonthBefore 

Returns the date that is the month before this date. 

 

getMonths 

Returns number of months from this date to given date. 

 

getYear 

Returns the year. 

 

index 

Returns index of the month and year, based on January 1971 being 0. 

 

isNotADate 

Returns true if the default values of 0 for the year and month are present, which shows that it has never been set. 

 

monthCheck 

Checks for month in bounds.