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public abstract class Shape {  int x;  int y;  public abstract void draw();  public void setAnchor(int x, int y) {  this.x = x;  this.y = y;  }  }  and a class Circle that extends and fully implements the Shape class. Which is correct?() 

  • A、 Shape s = new Shape(); s.setAnchor(10,10); s.draw();
  • B、 Circle c = new Shape(); c.setAnchor(10,10); c.draw();
  • C、 Shape s = new Circle(); s.setAnchor(10,10); s.draw();
  • D、 Shape s = new Circle(); s->setAnchor(10,10); s->draw();
  • E、 Circle c = new Circle(); c.Shape.setAnchor(10,10); c.Shape.draw();

参考答案

更多 “ public abstract class Shape {  int x;  int y;  public abstract void draw();  public void setAnchor(int x, int y) {  this.x = x;  this.y = y;  }  }  and a class Circle that extends and fully implements the Shape class. Which is correct?() A、 Shape s = new Shape(); s.setAnchor(10,10); s.draw();B、 Circle c = new Shape(); c.setAnchor(10,10); c.draw();C、 Shape s = new Circle(); s.setAnchor(10,10); s.draw();D、 Shape s = new Circle(); s-setAnchor(10,10); s-draw();E、 Circle c = new Circle(); c.Shape.setAnchor(10,10); c.Shape.draw();” 相关考题
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考题 单选题现有      public class Parentt      public void change (int x){)     )      public class Child extends Parent{     //覆盖父类change方法     }      下列哪个声明是正确的覆盖了父类的change方法?()A   protected void change (int x){}B   public void change(int x,  int y){}C   public void change (int x){}D   public void change (String s){}

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考题 多选题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;  }  }  Which two classes use the Shape class correctly?()Apublic class Circle implements Shape { private int radius; }Bpublic abstract class Circle extends Shape { private int radius; }Cpublic class Circle extends Shape { private int radius; public void draw(); }Dpublic abstract class Circle implements Shape { private int radius; public void draw(); }Epublic class Circle extends Shape { private int radius;public void draw() {/* code here */} }Fpublic abstract class Circle implements Shape { private int radius;public void draw() { / code here */ } }