java get next enum

To get the next enum value in a sequence in Java, you can use the values method of the Enum class and the ordinal method to get the index of the current value.

Here is an example of how to get the next enum value in a sequence:

public enum Days {
    SUNDAY,
    MONDAY,
    TUESDAY,
    WEDNESDAY,
    THURSDAY,
    FRIDAY,
    SATURDAY
}

Days currentDay = Days.MONDAY;
Days nextDay = Days.values()[(currentDay.ordinal() + 1) % Days.values().length];

The values method returns an array of the values of the enum in the order they are declared, and the ordinal method returns the index of the current value in the array. By adding 1 to the ordinal and taking the modulo of the result with the length of the array, we can get the next value in the sequence.

For example, if the currentDay variable is MONDAY, the ordinal method will return 1, and the nextDay variable will be assigned the value TUESDAY. If the currentDay variable is SATURDAY, the ordinal method will return 6, and the nextDay variable will be assigned the value SUNDAY.

Note that this approach only works if the enum values are in a sequence.