how to avoid multiple null checks, if need do something after the each check

How to avoid multiple null checks, if need do something after the each check or how best to handle these checks? java 8+

public void method(Object obj){
    if (Objects.nonNull(obj.getA())) {
        do something;
    }
    if (Objects.nonNull(obj.getB())) {
        do something;       
    }
    if (Objects.nonNull(obj.getC())) {
        do something;
    }
    do something;
}