Question

I want to know what context “this” refers to at a given time in my code.

I know there are rules but there has to be a way to check it by code.

How do I do that?

Answer 1

As long as you are expecting a set of known types you can do this.

if (obj instanceof Object1) {

} else if (obj instanceof Object2) {

} else if (obj instanceof Object3) {

}