public class Parent {  public int addValue( int a, int b) {     int s;     s = a+b;     return s;     }     }  class Child extends Parent {  }  Which methods can be added into class Child?()   A、 int addValue( int a, int b ){// do something...}B、 public void addValue (){// do something...}C、 public int addValue( int a ){// do something...}D、 public int addValue( int a, int b )throws MyException {//do something...}

public class Parent {  public int addValue( int a, int b) {     int s;     s = a+b;     return s;     }     }  class Child extends Parent {  }  Which methods can be added into class Child?()   

  • A、 int addValue( int a, int b ){// do something...}
  • B、 public void addValue (){// do something...}
  • C、 public int addValue( int a ){// do something...}
  • D、 public int addValue( int a, int b )throws MyException {//do something...}

相关考题:

下列选项中的 方法可以正确地加入类Child中,且父类的方法不会被覆盖。 public class Parent{ public int addValue(int a,int b){ int s; s=a+b; return s; } } class Child extends Parent{ }A.int addValue(int a,int b){∥do something…}B.public void addValue( ){∥do something…}C.public int addValue(int a,int b)throws MyException{∥do something…}D.public float addValue(int a,int b,float b=1.0){∥do something…}

有如下程序段: public class Parent { public int addValue (int a,intB){ int s; s=a+b; return 3; } } class Child extends Parent {} 则下列选项中,可以正确加入类Child中且父类的方法不会被覆盖的是( )。A.int addValue (int a,intB){//do something...}B.public void addValue() {//do something...}C.public int addValue (int a,intB)throws MyException {//do something...}D.public float addValue (int a,int b,float b=1.0) {//do someting...}

已知如下类定义: class Base { public Base (){ //... } public Base ( int m ){ //... } protected void fun( int n ){ //... } } public class Child extends Base{ // member methods } 如下哪句可以正确地加入子类中?() A.private void fun( int n ){ //...}B.void fun ( int n ){ //... }C.protected void fun ( int n ) { //... }D.public void fun ( int n ) { //... }

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; }

在下列源代码文件Test.java中,正确定义类的代码是( )。A.pblic class test { public int x=0; public test(int x) { this. x=x;} }B.public class Test { public int x=0; public Test(int x) { this. x=x;} }C.public class Test extends T1,T2{ public int x = 0; public Test(int x){ this. x = x; } }D.protected class Test extends T2{ public int x = 0; public Test(int x) { this. x = x; } }

若有以下程序:includeusing namespace std;class sample{private:int n;public:sampl 若有以下程序: #include<iostream> using namespace std; class sample { private: int n; public: sample(){} sample(int m) { n=m; } void addvalue(int m) { sample s; s.n=n+m; *this=s; } void disp() { cout<<"n"=<<n<<end1; } }; int main() { sample s(10); s.addvalue(5); s.disp(); return 0; } 程序运行后的输出结果是A.n=10B.n=5C.n=15D.n=20

下列程序中的this指针的作用是【 】。include class Sample{int n;static int st;publ 下列程序中的this指针的作用是【 】。include <iostream. h>class Sample{int n;static int st;public,Sample() {}Sample(int m) {n=m; st=m+10;}void Change(int k) {st=st+k;}void AddValue(int m){Sample s,s. n=n+m;*this=s;}void disp( ) {cout<<"n="<<n<<";st="<<st<<end1;}};int Sample: :st=0void main(){Sample s1(10),s2(10)s1.disp()s1.AddValue(5),s2.Change(100);s1.disp();s2.disp()}

有以下程序:include using namespace std;class sample {private: iht n;public: sam 有以下程序: #include <iostream> using namespace std; class sample { private: iht n; public: sample(){} sample(int m) { n=m; } void addvalue(int m) { sample s; s.n=n+m; *this=s; } void disp() { cout<<"n="<<n<<end1; } }; int main() { sample s(10); s.addvalue(5); s.disp(); return 0; } 程序运行后的输出结果是A.n=10B.n=5C.n=15D.n=20

分析以下程序的执行结果【】。include class S{ int A[10]; public: int operato 分析以下程序的执行结果【 】。include <iostream. h>class S{int A[10];public:int operator () (int);};int S: :operator() (int x) {return A[x];}void main() {S a;int i,j;for (i=0; i<10; i++)a(i)=i*2;for (i=0; i<10; i++)cout<<a(i)<<" ";cout<<end1; }

若有以下程序: #include 〈iostream〉 using namespace std; class sample { private: int n; public: sample(){} sample(int m) { n=m; } void addvalue(int m) { sample s; s.n=n+m; *this=s; } void disp() { cout〈〈"n="〈〈n〈〈end1; } }; int main() { sample s(10); s.addvalue(5); s.disp(); return 0; } 程序运行后的输出结果是( )。A.n=10B.n=5C.n=15D.n=20

在下列源代码文件Test.java中, ( )是正确的类定义。A.public class test{B.public class Test{ public int x=0;public int x=0; public test (intx) public Test (int x){ {this.x=x; this.x=x;} }} }C.public class Test extends T1,T2{D.protected class Test extends T2{ public int=0;public int x=0; public Test(int x){Public Test (int x){ this.x=x;this.x=x: }} }}

在下列源代码文件Test.java中,哪个选项是正确的类定义?A.public class test{ public int x=0; public test(int x ) { this.x=x; } }B.public class Test { public int x=0; public Test(int x ) { this.x=x; } }C.public class Test extends T1 T2 { public int x=0; public Test(int x){ this.x=x; } }D.protected class Test extends T2 { public int x=0; public Test(int x) { this.x=x; } }

class A {  protected int method1(int a, int b) { return 0; }  }  Which two are valid in a class that extends class A?() A、 public int method1(int a, int b) { return 0; }B、 private int method1(int a, int b) { return 0; }C、 private int method1(int a, long b) { return 0; }D、 public short method1(int a, int b) { return 0: }E、 static protected int method1(int a, int b) { return 0; }

public class Parent{     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(String s){}D、 public void change(int x){}

class Sock {  String size;  String color;  public boolean equals(Object o) {  Sock s = (Sock) o;  return color.equals(s.color);   }  // insert code here  }  哪两个满足 hashCode 的约定?()A、public int hashCode() { return 343; }B、public int hashCode() { return size.hashCode (); }C、public int hashCode() { return color.hashCode (); }D、public int hashCode() { return (int) (Math.random() * 1000);

public class Score implements Comparable {  private int wins, losses;  public Score(int w, int 1) { wins = w; losses = 1; }  public int getWins() { return wins; }  public int getLosses() { return losses; }  public String toString() {  return ““ + wins + “,“ + losses + “”; }  // insert code here  }  Which method will complete this class?() A、 public int compareTo(Object o) {/*mode code here*/}B、 public int compareTo(Score other) {/*more code here*/}C、 public int compare(Score s1,Score s2){/*more code here*/}D、 public int compare(Object o1,Object o2){/*more code here*/}

What produces a compiler error?()  A、 class A { public A(int x) {} }B、 class A {} class B extends A { B() {} }C、 class A { A() {} } class B { public B() {} }D、 class Z { public Z(int) {} } class A extends Z {}

public class MethodOver  {  public void setVar (int a, int b, float c)  {  }  }   Which two overload the setVar method?()  A、 Private void setVar (int a, float c, int b)  { }B、 Protected void setVar (int a, int b, float c) { }C、 Public int setVar (int a, float c, int b) (return a;)D、 Public int setVar (int a, int b, float c) (return a;)E、 Protected float setVar (int a, int b, float c) (return c;)

public class Parent {     int change() {…}     }  class Child extends Parent {     }  Which methods can be added into class Child?()    A、 public int change(){}B、 int chang(int i){}C、 private int change(){}D、 abstract int chang(){}

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){}

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?()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(); }E、 public class Circle extends Shape { private int radius;public void draw() {/* code here */} }F、 public abstract class Circle implements Shape { private int radius;public void draw() { / code here */ } }

1. public class Blip {  2. protected int blipvert(int x) { return 0; }  3. }  4. class Vert extends Blip {  5. // insert code here  6. }  Which five methods, inserted independently at line 5, will compile?()  A、 public int blipvert(int x) { return 0; }B、 private int blipvert(int x) { return 0; }C、 private int blipvert(long x) { return 0; }D、 protected long blipvert(int x, int y) { return 0; }E、 protected int blipvert(long x) { return 0; }F、 protected long blipvert(long x) { return 0; }G、protected long blipvert(int x) { return 0; }

多选题public class Parent {  public int addValue( int a, int b) {     int s;     s = a+b;     return s;     }     }  class Child extends Parent {  }  Which methods can be added into class Child?()Aint addValue( int a, int b ){// do something...}Bpublic void addValue (){// do something...}Cpublic int addValue( int a ){// do something...}Dpublic int addValue( int a, int b )throws MyException {//do something...}

多选题public class Parent {     int change() {…}     }  class Child extends Parent {     }  Which methods can be added into class Child?()Apublic int change(){}Bint chang(int i){}Cprivate int change(){}Dabstract int chang(){}

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){}

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What produces a compiler error?()A class A { public A(int x) {} }B class A {} class B extends A { B() {} }C class A { A() {} } class B { public B() {} }D class Z { public Z(int) {} } class A extends Z {}