CODEWITHSUNDEEP
javadatesimpledateformat
Danny Younes
Danny Younes

Reputation: 15

Java get date of week in short form

Hi I have a java application where I want to work out if a date string has got the day of the week.

//create the date variable
DateFormat dppomonth = new SimpleDateFormat("MMM dd ''yy");

//find if the string contains "Fri"
private void dppomonthActionPerformed(java.awt.event.ActionEvent evt) {
    if(!dppomonth.getDate().toString().contains("Fri")){
        JOptionPane.showMessageDialog(this,"Please Select Friday Only...");
        dppomonth.setDate(null);
    }
}

the getDate() function has been deprecated how do I find if the string contains "Fri"

if(!dppomonth.getDate().toString().contains("Fri"))

Upvotes: 0

Views: 133

Answers (3)

arthur
arthur

Reputation: 3325

the getDate() method is deprecated.

you can use the Calendar class like this:

    DateFormat dppomonth = new SimpleDateFormat("MMM dd ''yy");
   if (dppomonth.getCalendar().get(Calendar.DAY_OF_WEEK) == Calendar.FRIDAY){
}

Upvotes: 0

Anonymous
Anonymous

Reputation: 86203

I think you’re after something like this (the question is not completely clear):

    DateTimeFormatter dateFormatter
            = DateTimeFormatter.ofPattern("MMM d ''uu", Locale.ENGLISH);
    String dateString = "Apr 5 '18";
    LocalDate date = LocalDate.parse(dateString, dateFormatter);
    if (! date.getDayOfWeek().equals(DayOfWeek.FRIDAY)) {
        JOptionPane.showMessageDialog(this, "Please Select Friday Only...");
    }

As the code stands it does show the message since Apr 5 2018 is a Thursday.

Since you are using Java 8 (and even if you didn’t), I recommend you avoid SimpleDateFormat. It’s not only long outdated, it is also notoriously troublesome. Instead I am using java.time, the modern Java date and time API. It is much nicer to work with.

Link: Oracle tutorial: Date Time explaining how to use java.time.

Upvotes: 2

Yuriy Alevohin
Yuriy Alevohin

Reputation: 934

Use Calendar to make such check like

Date date = ...;
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);

if (dayOfWeek != Calendar.FRIDAY) {
    System.out.println("Please Select Friday Only...");
}

Upvotes: 3

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