网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
单选题
现有: class TestFoo { int x; String y; int getX() { return x; } String getY() { return y; } void setX(int x) { int z = 7; this.x = x; } } 可以添加多少个修饰符来封装此类?()
A
2
B
3
C
4
D
5
参考答案
参考解析
解析:
暂无解析
更多 “单选题现有: class TestFoo { int x; String y; int getX() { return x; } String getY() { return y; } void setX(int x) { int z = 7; this.x = x; } } 可以添加多少个修饰符来封装此类?()A 2B 3C 4D 5” 相关考题
考题
有如下程序:includeusing namespace std;class Base{int x;public:Base(int n=0):x(n
有如下程序: #include<iostream> using namespace std; class Base{ int x; public: Base(int n=0):x(n){cout<<n;} int getX( )const{return x;} }; class Derived:public Base{ int y; public: Derived(int m,int n):y(m),Base(n){tout<<m;} Derived(int m):y(m){cout<<m;} }; int main( ){ Derived dl(3),d2(5,7); return 0; } 程序的输出结果是A.375B.357C.0375D.0357
考题
下列程序中说明的公有成员是( ) 。class Location { int X; public: void init(int initX,int initY); private: int Y; public: int GetX(); int GetY(); };
A.init(int initX,int initY)B.XC.GetX(),GetY()D.B和C都是
考题
指出下面程序段中的错误,并说明出错原因【 】。class Location {int X, Y=20;protected:int zeroX, zeroY;int SetZero(int ZeroX, iht ZeroY);private:int length, height;public:float radius;void init(int initX,int initY);int GetX();Int GetY();};
考题
有以下程序: include using namespace std; class Point' { public: void SetPoint(
有以下程序: #include <iostream> using namespace std; class Point' { public: void SetPoint(int x,int y); void Move(int xOff,int yOff); int GetX() { return X; } int GetY() { return Y; } private: int X,Y; }; void Point::SetPoint(int x, int y) { X=x; Y=y; } void Point: :Move(int xOff, int yOff) X+=xOff; Y+=yOff; } int main () { Point p1; p1.SetPoint(1,2); p1.Move (5, 6); cout<<"Point1 is ("<<p1.GetX()<<','<<p1.GetY()<<")"<<end1; return 0; } 执行后的输出结果是( )。A.Point1 is (6,8)B.Point1 is (1,2)C.Point1 is (5,6)D.Point1 is (4,4)
考题
执行下列代码后,输出的结果为( )。 class Base { int x = 30; void setX( ) {x=1O;} } class SubClass extends Base { int x=40; void setX ( ) {x=20;} int getX( ) {return super. x; } } public class Test { public static void main(String[ ] args) { SubClass sub=new SubClass( ); sub. setX( ); System. out. println(sub, getX( ) ); } }A.10B.20C.30D.40
考题
有以下程序:includeusingnamespacestd;definePI3.14classPoint{private: intx,y;pub
有以下程序: #include <iostream> using namespace std; #define PI 3.14 class Point { private: int x,y; public: Point(int a,int b) { x=a; y=b; } int getx() { return x; } int gety() { return y; } }; class Circle : public Point { private: int r; public: Circle(int a,int b,int c):Point(a,b) { r=c; } int getr() { return r; } double area() { return PI*r*r; } }; int main() { Circle c1(5,7,10); cout<<cl.area()<<endl; return 0; } 程序执行后的输出结果是A.314B.157C.78.5D.153.86
考题
类A定义如下: class A { private int x=10; int getx() { return x;} } class B extends A { private int x=15; //需要覆盖getx()方法 } 在下述方法中可以在类B中覆盖getx()方法的是 ( )A.int getx(){…}B.int getx(float f){…}C.float getx(){…}D.double getx(float f){…}
考题
有如下类定义: class Test { private int x; public int y; public void setX (int m) {x=m;} public int getX( ) {return x;} }现用Test t=new Text();生成一个对象t,则如下语句中,错误的是( )。A.t.x=10;B.t.y=10;C.t. setX(10);D.int m=t.getX( );
考题
执行下面程序,显示的结果为( )。 public class Test { public static void main (String args[]) { Test t=newTest(); System.out.println (Loverload ("2","3")); } int overload (intx,int y) {return x+y;} String overload (String x,Stnng y){return x+y;} }A.2B.3C.5D.23
考题
根据注释内容在空白处填写适当内容。class Location{private:int X,Y;public:void init(int initX,int initY);int GetX( );int GetY( );};void Location::init(int initX,int initY){X=initX;Y=initY;}int Location::GetX( ){reutrn X;}int Location::GetY( ){reutrn Y;}include<iostream.h>void main( ){Location A1;A1.init(20,90);______ //定义一个指向A1的引用rA1cout<<rAl.GetX( )<<":"<<rAl.GetY( )<<endl;}
考题
有以下程序:includeusing namespace std;definePl 3.14Class Point{private:int x,y
有以下程序: #include<iostream> using namespace std; #definePl 3.14 Class Point {private: int x,y; public: Point(int a,intB) {X=a; y:b;} int getx() <return x;} int gety() {return y;}}; class Circle:public Point {priA.314B.157C.78.5D.153.86
考题
有如下程序: include using namespace std; class Base{ int x; pu
有如下程序: #include<iostream> using namespace std; class Base{ int x; public: Base(int n=0):x(n){cout<<n;) int getX()const{return x;} }; class Derived:public Base{ int y; public: Derived(int m,int n):y(m,)Base(n){cout<<m;} Derived(int m):y(m){cout<<m;} }; int main(){ Derived d1(3),d2(5,7) return 0; }运行时的输出结果是A.375B.357C.375D.357
考题
若有以下程序:include using namespace std;class A{private: int x;protected: int
若有以下程序: #include <iostream> using namespace std; class A { private: int x; protected: int y; public: int z; void setx(int i) { x=i; } int getx () { return x; }; class B : protected A { public: void setvalue(int a, int b, int c) { setx (a); y=b; z=c; } void display() { cout<<getx ( ) <<", "<<y<<", "<<z<<", "<<end1; } }; int main () { B obj; obj.setvalue(5, 6, 7); obj.display ( ); return 0; } 程序运行后的输出结果是( )。A.产生语法错误B.7,6,5C.5,6,7D.7,5,6
考题
若有以下程序:include using namespace std;class Base{ int x;protected: int y;pub
若有以下程序: #include <iostream> using namespace std; class Base { int x; protected: int y; public: int z; void setx(int i) { x=i; } int getx ( ) { return x; } }; class Inherit : private Base { private: int m; public: int p; void setvalue(int a,int b,int c, int d) { setx(a) ; y=b; z=c; m=d; } void display() { cout<<getx ()<<", "<<y<<", "<<z<<", "<<m<<end1; } }; int main() { Inherit A; A.setvalue(1,2,3,4); A.display(); return 0; } 程序运行后的输出结果是( )。A.1,2,3,4B.产生语法错误C.4,3,2,1D.2,3,4,5
考题
下面程序段的输出结果为 package test; public class A { int x=20; static int y=6; public static void main(String args[]) { Class B b=new Class B(); b.go(10); System.out.println(”x=”+b.x); } } class Class B { int x; void go(int y) { ClassA a=new ClassA(); x=a.y; } }A.x=10B.x=20C.x=6D.编译不通过
考题
若有以下程序:include using namespace std;define PI 3.14class Point{private: in
若有以下程序: #include <iostream> using namespace std; #define PI 3.14 class Point { private: int x,y; public: Point(int a,int b) { x=a; y=b; } int getx() { return x; } int gety() { return y; } }; class Circle : public Point { private: int r; public: Circle(int a, int b,int c) :Point(a,b) { r=c; } int getr() { return r; } double area() { return PI*r*r; } }; int main() { Circle c1(5,7,10); cout<<c1.area()<<end1; return 0; } 程序执行后的输出结果是( )。A.314B.157C.78.5D.153.86
考题
有以下程序:include using namespace std;define PI 3.14class Point{ private:int
有以下程序: #include <iostream> using namespace std; #define PI 3.14 class Point { private: int x,y; public: Point(int a,int b) { x=a; y=b; } int getx() { return x; }A.314B.157C.78.5D.153.86
考题
以下( )表达式是不合法的。A.String x="Sky";int y=5;x + =y:B.String x="Sky":int y=5:if(x==y){}C.String x="Sky":int y=5:x=x+y:D.String x=null:int y=(x!=null) (x.length( )>0)?x.length:0
考题
若有以下程序:include using namespace std;class Base{private: int x;protected: i
若有以下程序: #include <iostream> using namespace std; class Base { private: int x; protected: int y; public: int z; void setx(int i) { x=i; int getx () { return x; } }A.1,2,3,4B.产生语法错误C.4,3,2,1D.2,3,4,5
考题
下列类的定义中正确的是()A、class a{int x=0;int y=1;}B、class b{int x=0;int y=1;};C、class c{intx;int y;}D、class d{intx;int y;};
考题
现有: class TestMain { static int x = 2; static { x = 4; } static public void main(String[] args) { int y = x + 1; System.out.println(y); } } 和命令行: java TestMain 结果为:() A、 3B、 5C、 编译失败D、 运行时异常被抛出
考题
现有: class TestFoo f int x; String y; int getX() { return x; } String getY() {return y; } void setX (int x) { int Z=7: this.x=x; } 可以添加多少个修饰符来封装此类?() A、5B、4C、3D、2
考题
现有: class Foo { public static void main (String [] args) { int x=O; int y=4; for (int z=0; z3; Z++; X++) { if(x1++y10) y++; } System. out .println (y); } } 结果是什么?() A、7B、8C、10D、12
考题
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){}
考题
单选题现有: Public/project]class TestFoo { int x; String y; int getX() { return x; } (4,5,6是方法) String getY() { return y; } void setX(int x) { int z = 7; this.x = x; } } Private代表属性封装可以添加多少个修饰符来封装此类?()A
2B
3C
4D
5
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){}
考题
单选题现有: class TestFoo f int x; String y; int getX() { return x; } String getY() {return y; } void setX (int x) { int Z=7: this.x=x; } 可以添加多少个修饰符来封装此类?()A
5B
4C
3D
2
考题
单选题现有: class Foo { public static void main (String [] args) { int x=O; int y=4; for (int z=0; z1++y10) y++; } System. out .println (y); } } 结果是什么?()A
7B
8C
10D
12
热门标签
最新试卷