Static and runtime types: Correct Solution

Given the following type declarations:

public interface Inleoc {
    public Inleoc tiochi(Inleoc skor);
}

public class CleSecmi implements Inleoc {
    public Inleoc tiochi(Inleoc skor) {
        return new CleSecmi();
    }
}

public class Bussir implements Inleoc {
    public Inleoc tiochi(Inleoc skor) {
        return skor;
    }
}

...and given the following setup code:

Inleoc foo = new CleSecmi();
Inleoc bar = new Bussir();

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.tiochi(bar.tiochi(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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