编译以下代码,将出现什么情况?()abstract class Shape{ abstract void draw();}Class Square extends Shape{ }A. Square类和Shape类都可以成功编译B. Square类无法编译,但Shape类可以编译C. 类无法编译,但Square类可以编译D. Square类和Shape类都无法编译

编译以下代码,将出现什么情况?()

abstract class Shape

{ abstract void draw();}

Class Square extends Shape{ }

A. Square类和Shape类都可以成功编译

B. Square类无法编译,但Shape类可以编译

C. 类无法编译,但Square类可以编译

D. Square类和Shape类都无法编译


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在Java语言中,如果你有下面的类定义:  Abstract class Shape{ Abstract void draw(); }  class Square extendeds Shape{} 如果你试图编译上面的代码会发生()。 A、一切成功编译B、Shape可以编译,Square不能编译C、Square可以编译,Shape不能编译D、Shape,Square都不能编译

Which declaration prevents creating a subclass of an outer class?()A、 Static class FooBar{}B、 Private class FooBar{}C、 Abstract public class FooBar{}D、 Final public class FooBar{}E、 Final abstract class FooBar{}

现有:  interface  I  {  void go();  }      abstract class A implements I { }      class C extends A  {     void go(){ }     }  结果是什么?()   A、代码通过编译B、由于第1行的错误导致编译失败C、由于笫3行的错误导致编译失败D、由于第6行的错误导致编译失败

下列哪个类的声明是正确的()A、abstract final class HI{}B、abstract private move(){}C、protected private number;D、public abstract class Car{}

下列是抽象类的声明的是()A、  abstract class figure{    }B、  class  abstract figure{    }C、  seald class figure{    }D、  static class figure{  }

单选题Which declaration prevents creating a subclass of an outer class?()A Static class FooBar{}B Private class FooBar{}C Abstract public class FooBar{}D Final public class FooBar{}E Final abstract class FooBar{}

单选题在Java语言中,如果你有下面的类定义:   abstract class Shape {  abstract void draw();    }    Class Square extends Shape {}  如果你试图编译上面的代码会发生()。A一切成功编译BShape可以编译,Square不能编译CSquare可以编译,Shape不能编译DShape,Square都不能编译

单选题1. interface I { void go(); }   2.   3. abstract class A implements I { }  4.   5. class C extends A {   6. void go(){ }   7. }   结果是什么?()A代码通过编译B由于多个错误导致编译失败C由于第1行的错误导致编译失败D由于第6行的错误导致编译失败

单选题现有:  interface  I  {  void go();  }      abstract class A implements I { }      class C extends A  {     void go(){ }     }  结果是什么?()A代码通过编译B由于第1行的错误导致编译失败C由于笫3行的错误导致编译失败D由于第6行的错误导致编译失败

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 */ } }

单选题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();

单选题现有:  1. interface Animal {  2. void eat();  3. }  4.  5. // insert code here  6.  7. public class HouseCat extends Feline {  8. public void eat() { }  9. }   和五个声明:  abstract class Feline implements Animal { }  abstract class Feline implements Animal { void eat(); }  abstract class Feline implements Animal { public void eat(); }  abstract class Feline implements Animal { public void eat() { } }  abstract class Feline implements Animal { abstract public void eat(); }  分别插入到第5行,有几个可以通过编译?()A0B1C2D3

多选题abstract class A {  abstract void al();  void a2() { }  }  class B extends A {  void a1() { }  void a2() { }  }  class C extends B { void c1() { } }  and:  A x = new B(); C y = new C(); A z = new C();  Which four are valid examples of polymorphic method calls?()Ax.a2();Bz.a2();Cz.c1();Dz.a1();Ey.c1();Fx.a1();

单选题现有:  interface Animal {       void eat () ;       }       //insert code here       public class HouseCat extends Feline {       public void eat() { }       }  和五个申明  abstract class Feline implements Animal { }  abstract  class  Feline  implements  Animal  {  void eat () ;  }  abstract class Feline implements Animal { public void eat();}  abstract class Feline implements Animal { public void eat() {}  }  abstract class Feline implements Animal { abstract public void eat();} 结果为:()A1B2C3D4