How to use enum in a parameterized constructor?

Question

I have an assignment that asks me to create enumeration types. My question is, after I initialize them, how do I bring them into the default and parameterized constructors? i tried the following but it doesn't work... any ideas? Thanks

package magazine;
import paperPublication.PaperPublication;


public class Magazine extends PaperPublication {

    private enum paperQuality {LOW, NORMAL, HIGH};
    private enum issuingFrequency {WEEKLY, MONTHLY, YEARLY};

    public Magazine() {
        paperQuality = null;   //doesn't work
        issuingFrequency = null;    //doesn't work
    }

    public Magazine (double price, int numberOfPages, enum paperQuality  //doesn't work, enum issuingFrequency  //doesn't work) {

    }
}

Answer 1

This is a type definition:

private enum paperQuality ...

But you don't actually have a field of that type declared. Try something like this:

private enum PaperQuality {...};
private PaperQuality paperQuality;

The first line defines the PaperQuality enum, defining the various values that any PaperQuality can hold. The second line creates a private field that is of that type, named paperQuality. The constructor could look like this:

public Magazine (double price, int numberOfPages, PaperQuality paperQuality) {
    ...
    this.paperQuality = paperQuality;
}