Java: Reflection Example: Get All Static Field Names in Class

This post is just as I wrote in the title - "get all static field names in class".
I think you can easily imagine how to get other similar information by reflection...

public final static Collection<String> getStaticFieldNames(Class<?> classObj){
    ArrayList<String> list = new ArrayList<String>();
    Field[] fields = classObj.getFields();
    for(Field field: fields){
        if(Modifier.isStatic(field.getModifiers())){
            list.add(field.getName());
        }
    }
    return list;
}