How to test whether the value of a Java field gotten by reflection is null?

Question

I have

Field f = this.getClass().getFields()[0];

I need to know if f\'s value in this is null or not

Answer 1

You need to get the field from the object then check if it is null

Field f = this.getClass().getFields()[0];
if (f.get(this) == null)
  ...