对于如下代码,描述正确的是哪项? () class Student{ public static void main(String[] args){ Student student = new Student(); } }
对于如下代码,描述正确的是哪项?() class Student{ public static void main(String[] args){ Student student=new Student(); } }
有如下代码:public class Person { … }下列哪个符合该类的构造方法定义
设有如下的程序代码,
设有如下代码: int[] x = new int[25]; 执行后,以下哪个说法正确?
设有泛型类的定义如下class Test { }则由该类创建对象时,使用正确的是?
以下代码运行结果是class Base {}class Sub extends Base {}class Sub2 extends Base {}class CEx{public static void main(String argv[]){Base b = new Base();Sub s = (Sub) b;}}
设有如下代码public class Test6{int attr[] = {1,2,3};public static void main ( String args[] ) {System.out.println(attr[0]);}}哪个叙述为真?
设有如下声明语句: Option Base 1 Dim arr(3,-1 To 4) As Integer 则数组arr中数组元素的个数是( )
给出下面的代码段:( )public class Base{int w, x, y, z;public Base(int a, int b){x=a; y=b;}public Base(int a, int b, int c, int d){//assignment x=a, y=bw=d;z=c;}}在代码说明//assignment x=a, y=b处写下如下哪几个代码是正确的?()
在窗体上画一个命令按钮(其Name属性为Command1),然后编写如下代码;Option Base 1Private Sub Com
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?()
有如下程序:include<iostream>using namespace std;class BASE{public:~BASE(){cout<<"BASE";}
在窗体上面一个命令按钮(其Name属性为Command1),然后编写如下代码:Option Base 1Private Sub Cor
有如下程序 include <iostream> using namespace std; class Base { protected: Base(){cout<<'A'; } Base(char c) { cout<<c; } }; class Derived: public Base { public: Derived(char c){ cout<<c; } }; int main(){ Derived d1 ('B'); return 0; } 执行这个程序屏幕上将显示输出
有如下程序include<iostream>using namespace std;class base{public:virtual void f1(){cout<<
有如下程序: include<iostroam> using namespace std; class Base{ protected: Base{cout<<’A’;} Base(char C){cout<<c;} }; class Derived:public Base{ public: Derived(char C){tout<<C;} }; int main{ Derived dl(’B’); retum 0; } 执行这个程序的输出结果是()。
有如下程序: include<iostream> using namespace std; class Base { public: void fun() { cout<<"Base::fun"<<endl; } }; class Derived: public Base { public: void tim() } ____________ cout<<"Derived:: fun"<<endl; } }; int main() { Derived d; d.fun(); return O; } 已知其执行后的输出结果为: Base::fun Derived::fun 则程序中下划线处应填入的语句是
有如下程序:include <iostream>using namespace std;class BASE{public:~BASE(){cout<<"BASE";}
给定如下代码,下面可以作为该类的构造函数的是()public class Test {}
自定义一个Rectangle类,代码如下: public class Rectangle{ double l,w; Rectangle(){ return l*w;} } 下列哪个正确?
某 Java源文件代码如下: public class A { int a; } class B { int b; } class C { public static void main()
已知有如下代码: import java.util.*; public class Test{ public static void main(); } }
在运行了RIP的MSR路由器上看到如下路由信息:displayiprouting-table6.6.6.6RoutingTable:Publi