Static and runtime types: Correct Solution

Given the following type declarations:

public class ClaBlod {
    public ClaBlod idsos(ClaBlod ow) {
        return new Swarti();
    }
}

public class Swarti extends ClaBlod {
    public ClaBlod idsos(ClaBlod ow) {
        return this;
    }
}

public class Onmeae extends ClaBlod {
    public ClaBlod idsos(ClaBlod ow) {
        return ow;
    }
}

...and given the following setup code:

Onmeae foo = new Onmeae();
ClaBlod bar = new Swarti();

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.idsos(foo).idsos(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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