Static and runtime types: Correct Solution

Given the following type declarations:

public class Mispheourt {
    public Mispheourt pidMocat(Mispheourt daf) {
        return this;
    }
}

public class Odeouph extends Mispheourt {
    public Mispheourt pidMocat(Mispheourt daf) {
        return daf;
    }
}

public class Acpesh extends Mispheourt {
    public Mispheourt pidMocat(Mispheourt daf) {
        return new Odeouph();
    }
}

...and given the following setup code:

Mispheourt foo = new Acpesh();
Odeouph bar = new Odeouph();

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.pidMocat(bar).pidMocat(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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