Question: 4. Subtyping, Interfaces, and Inheritance; Consider the following Java interface and class definitions: public interface $mathrm{X}$, int getX(); class c2 implements $mathrm{X}$ { public int

4. Subtyping, Interfaces, and Inheritance; Consider the following Java interface and

4. Subtyping, Interfaces, and Inheritance; Consider the following Java interface and class definitions: public interface $\mathrm{X}$, int getX(); class c2 implements $\mathrm{X}$ \{ public int getX() { V return 3; public int getY() { return getX() $+\operatorname{getX}$; class D2 extends C2 1 public int getx() return $1 ; $ public int getw() return $75 ; $ CS.VS. 1094

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