The valueOf() method of java.time.DayOfWeek is an in-built function in Java which takes a string and returns an instance of DayOfWeek corresponding to the string. The string must match exactly to the identifier used to declare a day-of-week constant in this type. Extraneous white space characters are not permitted.
Method Declaration:
public static DayOfWeek valueOf(String name)
Syntax:
DayOfWeek dayOfWeekObject = DayOfWeek.valueOf(String name)
Parameters: This method takes name as parameter where:
Return Value: The function returns an instance of DayOfWeek corresponding to the name string
Below programs illustrate the above method:
Program 1:
// Java Program Demonstrate valueOf()// method of DayOfWeek  import java.time.*;  class DayOfWeekExample {    public static void main(String[] args)    {        // Initializing a DayOfWeek instance        DayOfWeek dayOfWeek            = DayOfWeek.valueOf("MONDAY");          // Printing the day-of-week        System.out.println(dayOfWeek.name());    }} |
Output:
MONDAY
Program 2:
// Java Program Demonstrate valueOf()// method of DayOfWeek  import java.time.*;  class DayOfWeekExample {    public static void main(String[] args)    {        // Initializing a DayOfWeek instance        DayOfWeek dayOfWeek            = DayOfWeek.valueOf("SATURDAY");          // Printing the day-of-week        System.out.println(dayOfWeek.name());    }} |
Output:
SATURDAY
Reference: https://docs.oracle.com/javase/8/docs/api/java/time/DayOfWeek.html#valueOf-java.lang.String-
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