Determining the Day of the Week from a Date
Given a specific date, determining the corresponding day of the week is a common task in programming. This question explores several approaches to retrieve the desired information.
Retrieving the Full Day of the Week
To obtain the full day of the week as a string (e.g., "Tue"), you can utilize the following methods:
- Utilizing java.util.Calendar:
Calendar c = Calendar.getInstance(); c.setTime(yourDate); int dayOfWeek = c.get(Calendar.DAY_OF_WEEK);
- Reformatting the Date String:
String dayOfWeek = new SimpleDateFormat("EE").format(date);
Retrieving the Day Ordinal
If you prefer to retrieve the day ordinal (e.g., 3 for Tuesday), you can employ the following technique:
int dayOfWeek = c.get(Calendar.DAY_OF_WEEK);
Handling Input Date Strings
In the event that your input is provided as a string rather than a Date object, you can parse it using SimpleDateFormat:
Date date = new SimpleDateFormat("dd/M/yyyy").parse(dateString);
Additional Libraries
- joda-time: Using DateTime, you can call dateTime.dayOfWeek().
- java.time (Java 8 ): Instead of joda-time, consider using the java.time package to determine day of week.
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