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How to iterate the values of an enum using a for loop in Java?
Enumerations in Java represents a group of named constants, you can create an enumeration using the following syntax −
enum Days {
SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY
}You can retrieve the contents of an enum using the values() method. This method returns an array containing all the values. Once you obtain the array you can iterate it using the for loop.
Example
public class IterateEnum{
public static void main(String args[]) {
Days days[] = Days.values();
System.out.println("Contents of the enum are: ");
//Iterating enum using the for loop
for(Days day: days) {
System.out.println(day);
}
}
}Output
Contents of the enum are: SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY SATURDAY
Example
enum Vehicles {
//Declaring the constants of the enum
ACTIVA125, ACTIVA5G, ACCESS125, VESPA, TVSJUPITER;
int i; //Instance variable
Vehicles() { //constructor
}
public void enumMethod() { //method
System.out.println("Current value: "+Vehicles.this);
}
}
public class Sam{
public static void main(String args[]) {
Vehicles vehicles[] = Vehicles.values();
for(Vehicles veh: vehicles) {
System.out.println(veh);
}
vehicles[3].enumMethod();
}
}Output
ACTIVA125 ACTIVA5G ACCESS125 VESPA TVSJUPITER Current value: VESPA
Updated on: 08-Feb-2021
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