Instantiate enum class

Question

Consider I am having the following enum class,

public enum Sample {
    READ,
    WRITE
}

and in the following class I am trying to test th

Answer 1

I'm answering to the first question. You can easily do it like this:

public static void main(String[] args) {

    Sample.READ.testEnumSample();
}

public enum Sample {
    READ,
    WRITE;

    public void testEnumSample() {
        System.out.println(this);
    }
}

Answer 2

You cannot create a new enum instance. Otherwise it won't be an enum. You can reference an already existing enum. As in your example

 Sample sample = Sample.READ;

Answer 3

Enums doesn't support public constructors and hence, cannot be instantiated. Enums are for when you have a fixed set of related constants. Exactly one instance will be created for each enum constant.