Java – create a method that can return two different contents

I'm trying to create a method that returns two different things based on the data type entered into it

This class changes random items to data types

This is what I have. I know that in this method, all that is allowed to return is a resource, but I don't know how to make it return exhausted resources or garbage

public Resource itemToResourceOrJunk(randomItem d){
    Resource i;
    Junk O;
    i = d.getResource();
    O = d.getJunk();

    if(d.resourceName.equals("notassigned")){
        return o;
    }
    else if(d.junkName.equals("notassigned")){
        return i;
    }
}

Solution

Let resource and junk implement an interface and use it as a return value

therefore

public class Resource implements ResourceOrJunk {
...
}

and

public class Junk implements ResourceOrJunk {
...
}

Interface:

public interface ResourceOrJunk {
//can be left empty,or add some shared methods
}

Now you can change the method to:

public ResourceOrJunk itemToResourceOrJunk(randomItem d){

And call methods to check the results:

ResourceOrJunk roj = itemToResourceOrJunk(d);
if (roj instanceof Resource){
    Resource r = (Resource)d;
    //do stuff with resource
} else {
    Junk j = (Jurk)d;
    //do stuff with junk
}