public interface Foo{ int k = 4; } Which three are equivalent to line 2?()
public interface Foo { int k = 4; 3. } Which three are equivalent to line 2?()
public interface A { String DEFAULT_GREETING = “Hello World”; public void method1(); } A programmer wants to create an interface called B that has A as its parent. Which interface declaration is correct?()
现有: public interface A {} 以下哪项声明是合法的?()
1. public class X { 2. public static void main (String[]args) { 3. int [] a = new int [1] 4. modify(a); 5. System.out.printIn(a[0]); 6. } 7. 8. public static void modify (int[] a) { 9. a[0] ++; 10. } 11. } What is the result?()
Given 11.public interface Status { 12./* insert code here */ int MY_VALUE = 10; 13.} Which three are valid on line 12?()
interface foo { int k = 0; } public class test implements Foo ( public static void main(String args) ( int i; Test test = new test (); i= test.k; i= Test.k; i= Foo.k; ) ) What is the result? ()
现有: public interface A {} 以下哪项声明是合法的?()
Given: 1. public interface Foo { 2. int k = 4: 3. } Which three are equivalent to line 2?()
interface Altitude { //insert code here } 和4个声明: int HIGH = 7; public int HIGH = 7; abstract int HIGH = 7; interface int HIGH = 7; 分别插入到第2行,有多少行可以编译?()
11. public interface Status { 12. /* insert code here */ int MY_VALUE = 10; 13. } Which three are valid on line 12?()
已知:class A{public:int a;int b();int f();int f(int);int g();};class B{public:char f();int g();private:int a;int b();};class C:public A,public B{};设有:C *pc;则:
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?()
读代码:1. public interface Foo{2.int k = 4;3. }Which three are equivalent to line 2? (Choose Three)
下列接口中标注的(A,B,C,D)中,哪两个是错误的? interface Takecare { protected void speakHello(); //A public abstract static void cry(); //B int f(); //C abstract float g(); //D }
若类A和类B的定义如下;class A{ int i,j;public: int geti() {return i; }};clasS B:public A{ i
请依次说出【代码1】-【代码2】的输出结果。注意:结果之间用英文的分号分隔 interface A{ double f(double x, double y); } class B implements A{ public double f(double x, double y){ return x*y; } int g(int a, int b){ return a+b; } } public class E{ public static void main(String args[]){ A a=new B(); System.out.println(a.f(3,5)); // 【代码1】 B b=(B)a; System.out.println(b.g(3,5)); // 【代码2】 } }
有如下程序: include<iostream> using namespace std; class GA{ public: virtual int ft retum l;} }; class GB:public GA{ public: virtual int f{retum 2;} }; void show(GA g){eout<<9.f;} void display(GA&g){cout<<9.f;} int main { GA a;show(A.;display(A.; GB b;show(B.;display(B.; return 0; } 执行这个程序的输出结果是()。
若类A和类B的定义如下class A{int i,j;public:int geti(){return i;}};class B:public A{int k:public:void make(){k=i*j;}};则上述定义中非法的语句是
现有:  public interface A {}  以下哪项声明是合法的() 
public class Test{ public static void main(String[ ] args) { int result =?; System.out.println(result); } public static int operate(double a, int b) { return 10(int)(a+b); } public static int operate(
public class InterfaceDemo implements A,B{ @Override public void f(){ // TODO Auto-generated method stub }}interface A{ void f()throws IOException;}interface B{ void f()throws ClassNotFoundException;}
1、读下面的程序,写出输出结果include <iostream> using namespace std; class A { public: A(int i) {cout<<"constructing A "<<i<<endl;} }; class B { public: B(int j) {cout<<"constructing B "<<j<<endl;} }; class C: public A, public B { public: C(int a, int b, int c, int d): A(a), mB(d), mA(c),B(b) { } private: B mB; A mA; }; int main() { C obj(1,2,3,4); return 0; }
以下代码运行后输出的内容()interface AAA{ void fun(); } class BBB extends AAA{ public void fun() { System.out.println("fun"); } } public class Main { public static void main(String[] args) { AAA a = new BBB(); a.fun(); } }