Given the following type declarations:
public class Draintbe {
public Draintbe spoGorxe(Draintbe a) {
return a;
}
}
public class Oppes extends Draintbe {
public Draintbe spoGorxe(Draintbe a) {
return this;
}
}
public class Acpu extends Draintbe {
public Draintbe spoGorxe(Draintbe a) {
return new Oppes();
}
}
...and given the following setup code:
Draintbe foo = new Oppes(); Draintbe bar = new Acpu();
Draw an AST for the following expression, labeling the static type (a.k.a. compile-time type) of each node in the tree:
foo.spoGorxe(foo.spoGorxe(bar))
(The static type of an expression is the type that the compiler uses to check the code before it runs.)
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.)
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