Static and runtime types: Correct Solution

Given the following type declarations:

public class Rhamsish {
    public Rhamsish teroc(Rhamsish hou) {
        return this;
    }
}

public class Dunprec extends Rhamsish {
    public Rhamsish teroc(Rhamsish hou) {
        return hou;
    }
}

public class Slagid extends Rhamsish {
    public Rhamsish teroc(Rhamsish hou) {
        return new Slagid();
    }
}

...and given the following setup code:

Rhamsish foo = new Dunprec();
Rhamsish bar = new Slagid();

Part 1

Draw an AST for the following expression, labeling the static type (a.k.a. compile-time type) of each node in the tree:

foo.teroc(bar).teroc(bar)

(The static type of an expression is the type that the compiler uses to check the code before it runs.)

Solution

Part 2

Draw an AST for the same expression, this time labeling the runtime type of each node in the tree.

(The runtime type of an expression is the type of the actual value that appears when the code runs.)

Solution

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