JAVA EE: Java Tutorial: Enum in java [How to use enum in switch statement

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Level.java

public enum Level
{
    HIGH, MEDIUM, LOW
}

EnumDemo.java

public class EnumDemo
{

    public static void main(String[] args)
    {
        Level level = Level.MEDIUM;

        /*
         * We can use enums in switch statements like this.
         */
        switch (level)
        {
        case HIGH:
            System.out.println("This is high voltage");
            break;
        case MEDIUM:
            System.out.println("This is medium voltage");
            break;
        case LOW:
            System.out.println("This is low voltage");
            break;
        }

    }
}