?
Solved

Calculating 7 Days Prior for a known date?

Posted on 2002-03-14
5
Medium Priority
?
945 Views
Last Modified: 2008-03-17
Basically I need to know what the date was 7 days before the date I currently know.

Initially I allow the user to set the Date:

:::
    SimpleDateFormat formatter = new SimpleDateFormat("dd-MMM-yy");
    Date currentTime1 = new Date();
    String dateString = formatter.format(currentTime1);
    jTextFieldDate.setText(dateString);
:::

ex. 14-MAR-02

Then the user needs to know what the date was 7 days ago.  I need to subtract 7 days from the date they confirm and in that format I have above.

Thanks to all that can help.

0
Comment
Question by:KrAzY
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
5 Comments
 
LVL 9

Expert Comment

by:yongsing
ID: 6866902
//Get current date
Calendar calendar = Calendar.getInstance();

// Get date seven days before current date
calendar.add(Calendar.DATE, -7);

SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yy");
Date currentTime1 = calendar.getTime();
String dateString = formatter.format(currentTime1);
jTextFieldDate.setText(dateString);
0
 

Accepted Solution

by:
maggari earned 200 total points
ID: 6867186
//Set date to whatever date you want to set.
//Here I am taking the current time as date
Date date = new Date();

Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
//add -7 to current time you know.
calendar.add(calendar.DATE, -7);

//Get the new time which is set to 7 days prior.
Date pdate = calendar.getTime();
0
 
LVL 11

Author Comment

by:KrAzY
ID: 6869377
I keep getting this message:

"ClearPurchasesForm.java": Error #: 300 : class getInstance not found in class java.util.Calendar at line 91, column 39


0
 

Expert Comment

by:maggari
ID: 6869509
The code I pasted works perfectly fine. Copy and paste the code I presented. Java as you know is case-sensitive, make sure you are using the right case for everything.

Check your imports. It should include java.util package.

Are you using new by any chance as in

Calendar calendar = new Calendar.getInstance();

that won't work..

I can't think of any other error. If u can paste ur code here.. i might be of some help.
0
 
LVL 11

Author Comment

by:KrAzY
ID: 6869577
Thanks... it was a minor error by me.
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

INTRODUCTION Working with files is a moderately common task in Java.  For most projects hard coding the file names, using parameters in configuration files, or using command-line arguments is sufficient.   However, when your application has vi…
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…
This theoretical tutorial explains exceptions, reasons for exceptions, different categories of exception and exception hierarchy.
Suggested Courses
Course of the Month9 days, 11 hours left to enroll

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question