给定如下程序: public abstract class Shape { private int x; private int y; public abstract void draw(); public void setAnchor(int x, int y) { this.x = x; this.y = y; } } 下列哪个选项是正确的?().
A: public class Circle implements Shape {private int radius; }
B: public abstract class Circle extends Shape { private int radius; }
C: public class Circle extends Shape { private int radius; public void draw(); }
D: public abstract class Circle implements Shape { private int radius; public void draw(); }
发布时间:2024-04-17 09:52:00