Switch case for two INT variables

java, switch-statement

Solution

You can do everything with enums. I created examples for the first two values, you can continue with the rest.

public enum Direction
{
    SouthEast(1,1),
    NorthEast(1,-1);

    int _xPoint, _yPoint;

    Direction(int xPoint, int yPoint)
    {
        _xPoint = xPoint;
        _yPoint = yPoint;
    }

    public static Direction getDirectionByPoints(int xPoint, int yPoint)
    {
        for (Direction direction : Direction.values())
        {
            if(   Integer.signum(xPoint) == direction._xPoint 
               && Integer.signum(yPoint) == direction._yPoint )
            {
                return direction;
            }
        }
        throw new IllegalStateException("No suitable Direction found");
    }
}

So you can just call:

m_navigations = Direction.getDirectionByPoints(xPoint,yPoint);

Problem

Consider the following code : ``` if (xPoint > 0 && yPoint > 0) { m_navigations = Directions.SouthEast; } else if (xPoint > 0 && yPoint < 0) { m_navigations = Directions.NorthEast; } else if (xPoint < 0 && yPoint > 0) { m_navigations = Directions.SouthWest; } else if (xPoint < 0 && yPoint < 0) { m_navigations = Directions.NorthWest; } else if (xPoint == 0 && yPoint < 0) { m_navigations = Directions.North; } else if (xPoint == 0 && yPoint > 0) { m_navigations = Directions.South; } else if (xPoint > 0 && yPoint == 0) { m_navigations = Directions.East; } else if (xPoint < 0 && yPoint == 0) { m_navigations = Directions.West; } ``` This is quite ugly , and I want to use switch case , but how can I use `switch` with `2` variables ? I thought about something like this - the answer of @Frits van Campen , but I need to use `>` and `<` operators ... Thanks

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