多选题class One {   public One foo() { return this; }  }  class Two extends One {  public One foo() { return this; }  }  class Three extends Two {   // insert method here  }  Which two methods, inserted individually, correctly complete the Three class?()Apublic void foo() { }Bpublic int foo() { return 3; }Cpublic Two foo() { return this; }Dpublic One foo() { return this; }Epublic Object foo() { return this; }

多选题
class One {   public One foo() { return this; }  }  class Two extends One {  public One foo() { return this; }  }  class Three extends Two {   // insert method here  }  Which two methods, inserted individually, correctly complete the Three class?()
A

public void foo() { }

B

public int foo() { return 3; }

C

public Two foo() { return this; }

D

public One foo() { return this; }

E

public Object foo() { return this; }


参考解析

解析: 暂无解析

相关考题:

有如下程序:#includeusing namespace std;class ONE{public:virtual void f(){cout"l";}};class TWO:public ONE{public:TWO(){cout"2";}};class THREE:public TWO{public:virtual void f(){TWO::f(); cout"3";}};int main(){ONE aa, *p;TWO bb;THREE cc;p = cc;p-f();return 0;}执行上面程序的输出是 【 11 】 。

有如下程序: include using namespaee std; class ONE{ public: virtual void f 有如下程序:include <iostream>using namespaee std;class ONE{public:virtual void f( ){cout<<"1";}};class TWO:public ONE{public:TWO( )1 cout<<"2";}{;class THREE:public TWO{public:virtual void f( )}TWO::f( );cout<<"3";}};int main( ){ONE aa,*P;TWO bb;THREE cc;P=cc;p->f( );return 0;}程序的输出结果是______。

( 35 )有如下程序:#includeiostreamusing namespace std;class ONE{int c;public:ONE ( ) : c ( 0 ) {cout1;}ONE ( int n ) : c ( n ) {cout2;}};class TWO{ONE onel;ONE one2;public:TWO ( int m ) : one2 ( m ) {cout3;}};int main () tTWO t ( 4 )return 0}运行时的输出结果是A ) 3B ) 23C ) 123D ) 213

有如下程序: include using namespace std; class ONE { public: virtual void f() { 有如下程序:include <iostream>using namespace std;class ONE{public:virtual void f() { cout << "1"; }};class TWO: public ONE{public:TWO() { cout << "2"; }};class THREE: public TWO{public:virtual void f() {TWO::f(); cout << "3"; }};int main(){ONE aa, *p;TWO bb;THREE cc;p=cc;P->f();return 0;}执行上面程序的输出是【 】。

类clasg one在声明func成员函数时发生错误,出错原因是______。class oneprivate:int a;public:void func(two);};class two{private:int b;friend vold one::func(two);};void one::func(twor){a=r.b;}

Given:Which code, inserted at line 15, allows the class Sprite to compile?() A.Foo { public int bar() { return 1; }B.new Foo { public int bar() { return 1; }C.new Foo() { public int bar() { return 1; }D.new class Foo { public int bar() { return 1; }

有如下程序:#includeiostreamusing narnespace std;class ONE{int e;public:ONE():c(O){cout1;)ONE(int n):c(13){cout2;}};class TWO{ONE oriel;ONE one2,public:TWO(int m):one2(m){cout3;}};int main(){TWO t(4);return O;}运行时的输出结果是A.3B.23C.123D.213

有下列程序:includeusing namespace std;class ONE{ public:virtual void f(){COUt 有下列程序:include<iostream>using namespace std;class ONE{public:virtual void f(){COUt<<"1";}};c1assTWO:public ONE{public:TWO(){cout<<"2";}};class THREE:public TWO{pub

类class one 在声明func 成员函数时发生错误,出错原因是【 】。Class one{private:int a;public:void func(two )};class two{private:int b;friend void one: :func(two );};void one: : func(two r)a=r.b;}

12.A. grade one,class fourB. class four,grade oneC. Grade One,Class FourD. Class Four,Grade One

class One {  public One() { System.out.print(1); }  }  class Two extends One {  public Two() { System.out.print(2); }  }  class Three extends Two {  public Three() { System.out.print(3); }  }  public class Numbers{  public static void main( String[] argv) { new Three(); }  }  What is the result when this code is executed?() A、 1B、 3C、 123D、 321E、 The code rims with no output.

package foo;  public class Outer {  public static class Inner {  }  }   Which statement is true?() A、 Compilation fails.B、 An instance of the Inner class can be constructed with “new Outer.Inner()”.C、 An instance of the Inner class cannot be constructed outside of package foo.D、 An instance of the Inner class can be constructed only from within the Outer class.E、 From within the package foo, and instance of the Inner class can be constructed with “new Inner()”.

Which statements concerning the following code are true?()   class a {   public a() {}   public a(int i) { this(); }   }   class b extends a {   public boolean b(String msg) { return false; }   }   class c extends b  {  private c() { super(); }   public c(String msg) { this(); }   public c(int i) {}   }  A、The code will fail to compile.B、The constructor in a that takes an int as an argument will never be called as a result of constructing an  object of class b or c.C、Class c has three constructors.D、Objects of class b cannot be constructed.E、At most one of the constructors of each class is called as a result of constructing an object of class c.

class One {  void foo() {}  }  class Two extends One {   //insert method here  }  Which three methods, inserted individually at line 14, will correctly complete class Two?()A、 int foo() { /* more code here */ }B、 void foo() { /* more code here */ }C、 public void foo() { /* more code here */ }D、 private void foo() { /* more code here */ }E、 protected void foo() { /* more code here */ }

package foo; public class Outer (  public static class Inner (  )  )   Which statement is true? () A、 An instance of the Inner class can be constructed with “new Outer.Inner ()”B、 An instance of the inner class cannot be constructed outside of package foo.C、 An instance of the inner class can only be constructed from within the outer class.D、 From within the package bar, an instance of the inner class can be constructed with “new inner()”

class Foo {  private int x;  publicFoo(intx) {this.x=x; }  public void setX( int x) { this.x = x; }  public int getX() { return x; }  }   public class Gamma {  static Foo fooBar( Foo foo) {  foo = new Foo( 100);  return foo;  }  public static void main( String[] args) {  Foo foo = new Foo( 300);  System.out.print( foo.getX() + “-“);  Foo fooFoo = fooBar( foo);  System.out.print( foo.getX() + “-“);  System.out.print( fooFoo.getX() + “-“);  foo = fooBar( fooFoo);  System.out.print( foo.getX() + “-“);  System.out.prmt( fooFoo.getX());  }  }  What is the output of this program?()A、 300-100-100-100-100B、 300-300-100-100-100C、 300-300-300-100-100D、 300-300-300-300-100

public class OuterClass {  private double d1  1.0;  //insert code here   }   You need to insert an inner class declaration at line2. Which two inner class declarations are valid?() A、 static class InnerOne {  public double methoda() {return d1;}  }B、 static class InnerOne {  static double methoda() {return d1;} }C、 private class InnerOne {  public double methoda() {return d1;} }D、 protected class InnerOne {  static double methoda() {return d1;} }E、 public abstract class InnerOne {  public abstract double methoda();  }

class One {   public One foo() { return this; }  }  class Two extends One {  public One foo() { return this; }  }  class Three extends Two {   // insert method here  }  Which two methods, inserted individually, correctly complete the Three class?()A、 public void foo() { }B、 public int foo() { return 3; }C、 public Two foo() { return this; }D、 public One foo() { return this; }E、 public Object foo() { return this; }

public class Delta {  static boolean foo(char c) {  System.out.print(c);  return true;  }  public static void main( String[] argv ) {  int i =0;  for ( foo(‘A’); foo(‘B’)(i2); foo(‘C’)){  i++ ;  foo(‘D’);  }  }  }  What is the result?()  A、 ABDCBDCBB、 ABCDABCDC、 Compilation fails.D、 An exception is thrown at runtime.

Given:   10. class One {   11. void foo() { }   12. }   13. class Two extends One {   14. //insert method here   15. }   Which three methods, inserted individually at line 14, will correctly complete class Two?()A、 public void foo() { /* more code here */ }B、 private void foo() { /* more code here */ }C、 protected void foo() { /* more code here */ }D、 int foo() { /* more code here */ }  E、 void foo() { /* more code here */ }

多选题Given:   10. class One {   11. void foo() { }   12. }   13. class Two extends One {   14. //insert method here   15. }   Which three methods, inserted individually at line 14, will correctly complete class Two?()Apublic void foo() { /* more code here */ }Bprivate void foo() { /* more code here */ }Cprotected void foo() { /* more code here */ }Dint foo() { /* more code here */ }Evoid foo() { /* more code here */ }

多选题class One {  void foo() {}  }  class Two extends One {   //insert method here  }  Which three methods, inserted individually at line 14, will correctly complete class Two?()Aint foo() { /* more code here */ }Bvoid foo() { /* more code here */ }Cpublic void foo() { /* more code here */ }Dprivate void foo() { /* more code here */ }Eprotected void foo() { /* more code here */ }

多选题Which statements concerning the following code are true?()   class a {   public a() {}   public a(int i) { this(); }   }   class b extends a {   public boolean b(String msg) { return false; }   }   class c extends b  {  private c() { super(); }   public c(String msg) { this(); }   public c(int i) {}   }AThe code will fail to compile.BThe constructor in a that takes an int as an argument will never be called as a result of constructing an  object of class b or c.CClass c has three constructors.DObjects of class b cannot be constructed.EAt most one of the constructors of each class is called as a result of constructing an object of class c.

单选题10. interface Foo { int bar(); }  11. public class Sprite {  12. public int fubar( Foo foo) { return foo.bar(); }  13. public void testFoo() {  14. fubar(  15. // insert code here  16.);  17. }  18. }  Which code, inserted at line 15, allows the class Sprite to compile?()A Foo { public int bar() { return 1; } }B new Foo { public int bar() { return 1; } }C newFoo() { public int bar(){return 1; } }D new class Foo { public int bar() { return 1; } }

单选题class One {  public One() { System.out.print(1); }  }  class Two extends One {  public Two() { System.out.print(2); }  }  class Three extends Two {  public Three() { System.out.print(3); }  }  public class Numbers{  public static void main( String[] argv) { new Three(); }  }  What is the result when this code is executed?()A 1B 3C 123D 321E The code rims with no output.

单选题package foo;  public class Outer {  public static class Inner {  }  }   Which statement is true?()A Compilation fails.B An instance of the Inner class can be constructed with “new Outer.Inner()”.C An instance of the Inner class cannot be constructed outside of package foo.D An instance of the Inner class can be constructed only from within the Outer class.E From within the package foo, and instance of the Inner class can be constructed with “new Inner()”.

多选题public class OuterClass {   private double d1 1.0;   //insert code here   }   You need to insert an inner class declaration at line2. Which two inner class declarations are valid?()Astatic class InnerOne {  public double methoda() {return d1;}  }Bstatic class InnerOne {  static double methoda() {return d1;}  }Cprivate class InnerOne {  public double methoda() {return d1;}  }Dprotected class InnerOne {  static double methoda() {return d1;}  }Epublic abstract class InnerOne {  public abstract double methoda();  }