EnumSet allof() Method in Java
The Java.util.EnumSet.allOf(Class elementType) in Java is used to create an enum set that will be used to contain all of the elements in the specified elementType.
Syntax:
public static > EnumSet allOf(Class elementType)
Parameters: The method accepts one parameter elementType of element type and refers to the class object whose elements are to be stored into the set.
Return Value: The method does not return any value.
Exceptions: The method throws NullPointerException if the elementType is Null.
Below programs illustrate the working of Java.util.EnumSet.allOf() method:
Program 1:
import java.util.*;
enum GFG {
Welcome,
To,
The,
World,
of,
Geeks
}
;
public class Enum_Set_Demo {
public static void main(String[] args)
{
EnumSet<GFG> e_set = null ;
System.out.println(e_set);
e_set = EnumSet.allOf(GFG. class );
System.out.println( "The updated set is:" + e_set);
}
}
|
Output:
null
The updated set is:[Welcome, To, The, World, of, Geeks]
Program 2:
import java.util.*;
enum CARS {
RANGE_ROVER,
MUSTANG,
CAMARO,
AUDI,
BMW
}
;
public class Enum_Set_Demo {
public static void main(String[] args)
{
EnumSet<CARS> e_set = null ;
System.out.println(e_set);
e_set = EnumSet.allOf(CARS. class );
System.out.println( "The updated set is:" + e_set);
}
}
|
Output:
null
The updated set is:[RANGE_ROVER, MUSTANG, CAMARO, AUDI, BMW]
Last Updated :
02 Jul, 2018
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