In calendar class...
public final static int DAY_OF_WEEK = 7;
c.DAY_OF_WEEK = static Day of week int code in calendar class. (the one above)
c.get(Calendar.DAY_OF_WEEK) = get the day today using DAY_OF_WEEK int code.
You can also do c.get(7) because the integer 7 is the code for the DAY_OF_WEEK field of the calendar class but it's not advisable to do so because future updates of the JDK may update the number assigned to DAY_OF_WEEK field to a different number which may cause a lot of
java programs to fail but if you use c.get(Calendar.DAY_OF_WEEK) whatever changes to the integer code of DAY_OF_WEEK will not affect your program.