Simple Program that Determines an Angle's Quadrant

QuadrantDeterminer.java

public class QuadrantDeterminer {
    public static void main(String[] args) {
        displayQuadrant(/* angle */);
    }
    
    public static int determineQuadrantPos(int angle) {
        if (angle < 0)
            return -1;
        if (angle > 360)
            return determineQuadrantPos(angle - 360);

        if (angle < 90)
            return 1;
        else if (angle < 180)
            return 2;
        else if (angle < 270)
            return 3;
        else
            return 4;
    }

    public static int determineQuadrantNeg(int angle) {
        if (angle > 0)
            return -1;
        if (angle < -360)
            return determineQuadrantNeg(angle + 360);

        if (angle > -90)
            return 4;
        else if (angle > -180)
            return 3;
        else if (angle > -270)
            return 2;
        else
            return 1;
    }

    public static void displayQuadrant(int angle) {
        int quad;

        if (angle < 0)
            quad = determineQuadrantNeg(angle);
        else
            quad = determineQuadrantPos(angle);

        String quadrant = "";

        switch (quad) {
            case -1:
                quadrant = "unresolved";
                break;
            case 1:
                quadrant = "I";
                break;
            case 2:
                quadrant = "II";
                break;
            case 3:
                quadrant = "III";
                break;
            case 4:
                quadrant = "IV";
                break;
        }

        System.out.println(quadrant);
    }