How do you compare enum to int?

Question

I am trying to change the color by using an enum, I am comparing an enum to an int but it keeps throwing an error

public class Game {

public enum State{
    RED, YELLOW, BLANK;
}

public State getState(int x, int y) {
    y=1;
    for (x=5;x>0;x--) {
  if (x== BLANK && y== BLANK) {
        return State.RED;
    }
    //return State.BLANK;
}
    return State.BLANK;
}

How do I compare an int to an enum? so that I can change the color in the first column y which is set to 1

Answer 1

Just use the Enum.ordinal() method of an enum to get the ordered number from 0 to X which you can compare to your x variable:

public class Game {
    public enum State {
        BLANK,   // 0
        RED,     // 1
        YELLOW   // 2
    }

    public State getState(int x, int y) {
        y = 1;
        for (x = 5; x > 0; x--) {
            if (x == State.BLANK.ordinal() && y == State.BLANK.ordinal()) {
                return State.RED;
            }
            //return State.BLANK;
        }
        return State.BLANK;
    }
}

Answer 2

You have to assign values to the enum. As is, it's trying to compare two things which aren't comparable.

public class Game {

public enum State{
    RED(1), YELLOW(2), BLANK(0);

    private int val;

    private State(int value){
        val = value;
    }

    public int getValue(){
        return val;
    }
}

public State getState(int x, int y) {
    y=1;
    for (x=5;x>0;x--) {
        if (x== State.BLANK.getValue() && y== State.BLANK.getValue()) {
            return State.RED;
        }
        //return State.BLANK;
    }
    return State.BLANK;
}
}

Answer 3

you could use ordinal(). It returns the ordinal of this enumeration constant (its position in its enum declaration, where the initial constant is assigned an ordinal of zero).

In your case RED.ordinal() would return 0.