JAVA how to take a Date and see the day, month, and year?

Question

I have a assignment for a class where we take in a date then see if the date given is valid. If it is we then add a day onto it. Where I am having trouble is after I check that the date is valid it is saved to

Date appointment = new Date();

appointment = new Date(month, day, year);
Date.advanceDate(appointment);

in a different file called Date.java

public static void advanceDate(Date aDate){
    //here is where I need to read the date in aDate
}

After searching online through the Java api I haven't been able to find a way to add a day onto appointment or get the day, month, and year from appointment add a day to that and then save it as a new Date

what I have tried is doing after looking at http://docs.oracle.com/javase/8/docs/api/java/util/Date.html

aDate.getDay();

but eclipse tells me "the method getDate()is undefined for the type Data

aDate.toString();

this doesn't return the month date and year it returns its location in memery

every solution I've found online uses Calender which seems to have replaced Date

What API are you looking at? http://docs.oracle.com/javase/8/docs/api/java/util/Date.html — Sotirios Delimanolis, Feb 08 '15 at 06:18
I looked at that API, maybe I was doing something wrong but what i tried was appointment.getDay(); then eclipse tells me the method getDay() is undefined for the type Data — Bynienar, Feb 08 '15 at 06:33

score 0 · Answer 1 · answered Feb 08 '15 at 06:23

I believe you are looking for a Calendar and a DateFormat,

int year = 2015;
int month = Calendar.FEBRUARY; // <-- this is actually a 1.
int date = 8;
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Calendar cal = Calendar.getInstance();
cal.set(year, month, date);
cal.add(Calendar.DAY_OF_MONTH, 1);
System.out.println(df.format(cal.getTime()));

Output is

2015-02-09

¹FEBRUARY.

JAVA how to take a Date and see the day, month, and year?

1 Answers1