I have to write a lot of conditions but sonarlint is giving error to refactor the method to reduce its cognitive complexity. How to resolve this. I tried switch case but that is also giving the same error.

public enum ExampleEnum{
UNKNOWN(-1),
D0_D100(0),
D100_D200(100),
D200_D300(200),
D300_D400(300),
D400_D500(400),
D500_D600(500),
D600_D700(600),
D700_D800(700),
D800_D900(800),
D900_D1000(900);
public static ExampleEnum getScoreType(Integer score) {
    if (Objects.isNull(score) || score < D0_D100.score) {
        return UNKNOWN;
    } else if (score >= D0_D100.score && score < D100_D200.score) {
        return D0_D100;
    } else if (score >= D100_D200.score && score < D200_D300.score) {
        return D100_D200;
    } else if (score >= D200_D300.score && score < D300_D400.score) {
        return D200_D300;
    } else if (score >= D300_D400.score && score < D400_D500.score) {
        return D300_D400;
    } else if (score >= D400_D500.score && score < D500_D600.score) {
        return D400_D500;
    } else if (score >= D500_D600.score && score < D600_D700.score) {
        return D500_D600;
    } else if (score >= D600_D700.score && score < D700_D800.score) {
        return D600_D700;
    } else if (score >= D700_D800.score && score < D800_D900.score) {
        return D700_D800;
    } else if (score >= D800_D900.score && score < D900_D1000.score) {
        return D800_D900;
    } else {
        return D900_D1000;
    }
}

>Solution :

Put the logic into a loop. something like:

public static ExampleEnum getScoreType(Integer score) {
    if (Objects.isNull(score) || score < D0_D100.score) {
        return UNKNOWN;
    for (int i =0; i< ExampleEnum.values().length-1;i++) {
        if (ExampleEnum.values()[i].score <= score && ExampleEnum.values()[i+1].score > score )
            return ExampleEnum.values()[i];
    }
    return D900_D1000;
}