以下程序是正确的。 class IamAbstract { final int f; double d; abstract void method1(); } 。() 此题为判断题(对,错)。
以下程序是正确的。 class IamAbstract { final int f; double d; abstract void method1(); } 。()
此题为判断题(对,错)。
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下列程序片段中,能通过编译的是A.public abstract class Animal{ public void speak();}B.public abstract class Animal{ public void speak(){}}C.public class Animal{ public abstract void speak();}D.public abstract class Animal{ public abstract void speak(){}}
分析以下程序执行结果【】。 include int f (int x, int y){return x,y; } double f (d 分析以下程序执行结果【 】。include<iostream.h>int f (int x, int y){return x,y;}double f (double x, double y) {return x,y;}void main() {int a=4, b=6;double c=2.6, d=7.4;cout<<f (a, b) <<","<<f (c, d) <<end1;}
以下程序的执行结果是______。 include class A{ int a: public: void seta(int x) { 以下程序的执行结果是______。include<iostream.h>class A{int a:public:void seta(int x) {a=x;}void showa() {cout<<a<<end1;}};class B{int b;public:void setb(int x) {b=x;}void showb(){cout<<b<<end1;}};
下列程序段中,正确的是______。 ①class MvClass { int var = 100; static int getVar() { return var; } } ②public class MyClass { final int date; void MyClass (int d) { date = d; } } ③public class MyMain { public static void main(String args[]) { System.out.println(Myclass1.date); } } class MyClass1 { int data = 10; } ④class IamAbstract { final int f; double d; abstrct void method(); }A.②④B.①③C.②D.以上都不对
下列选项成员变量声明正确的是A.public protected final int i;B.abstract class F1{…}C.private double height;D.double weight{}
下列成员变量声明中,正确的是______。A.public protected final int i;B.abstract class F1{…}C.private double height;D.double weight
下列选项成员变量声明正确的是( )。A.public protected final int i;B.abstract class Fl{…}C.private double height;D.double weight
下列哪个成员变量声明是正确的? ( )A.public protected final iht i;B.abstract class F9{...}C.private double height;D.double weight{}
下列哪个成员方法声明是正确的? ( )A.public abstract final int f(){...}B.public static boolean f(){...}C.static protected void g(a,{...}D.protected private number;
下列程序片段中,能通过编译的是( )。 A.public abstract class Animal{ public void speak;}S 下列程序片段中,能通过编译的是( )。A.public abstract class Animal{ public void speak;}B.public abstract class Animal{ public void speak{);}C.public class Animal{ pubilc abstract void speak;}D.public abstract class Animal{ pubile abstract void speak{};}
分析下面程序,哪一行代码能正确赋值?()class Demo {public void method() {final int num1 = 10;static int num2 = 20;abstract int num3 = 30;private int num4 = 40;}} A.final int num1 = 10;B.static int num2 = 20;C.abstract int num3 = 30;D.private int num4 = 40;
下列哪个成员方法声明是正确的? ( )A.public abstract final int f(){…}B.public static boolean f(){…}C.static protected void g(a,b){…}D.protected private number;
下列程序的运行结果是______。 include class Base { public: virtual void func(int 下列程序的运行结果是______。include<iostream.h>class Base{public:virtual void func(int i){cout<<"class Base:"<<i<<end1;)};class Derived: public Base{public:void func(double d){cout<<"class Derived:"<<d<<endl;}};void main( ){Base a,*p=a;Derived b;p=b;(*p).func(3.3);}
设有程序如下: abstract class absclass { abstract void method1(); } class conclass extends absclass { public void method1() { System.out.println("子类");} } public class mainclass { public static void main(String args[]) { absclass ac1=new absclass(); //语句1 absclass ac2=new conclass(); //语句2 ac2.method1(); //语句3 } } 则main()方法中的第一条语句(即语句1)可以顺利通过编译。()此题为判断题(对,错)。
{ IamAbstract ia=new IamAbstract(); } abstract class IamAbstract { IamAbstract(){} } 。() 此题为判断题(对,错)。
Which will declare a method that is available to all members of the same package and can be referenced without an instance of the class?() A、 Abstract public void methoda();B、 Public abstract double methoda();C、 Static void methoda(double d1){}D、 Public native double methoda(){}E、 Protected void methoda(double d1){}
Which will declare a method that is available to all members of the same package and be referenced without an instance of the class?()A、 abstract public void methoda ();B、 public abstract double inethoda ();C、 static void methoda (double dl) {}D、 public native double methoda () {}E、 protected void methoda (double dl) {}
以下声明合法的是()A、default String sB、public final static native int w( )C、abstract double dD、abstract final double hyperbolicCosine( )
class BaseClass{ private float x= 1.0f; protected void setVar (float f) {x = f;} } class SubClass extends BaseClass { private float x = 2.0f; //insert code here } Which two are valid examples of method overriding?() A、 Void setVar(float f) {x = f;}B、 Public void setVar(int f) {x = f;}C、 Public void setVar(float f) {x = f;}D、 Public double setVar(float f) {x = f;}E、 Public final void setVar(float f) {x = f;}F、 Protected float setVar() {x=3.0f; return 3.0f; }
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 */ } }
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Which will declare a method that is available to all members of the same package and can be referenced without an instance of the class?()A Abstract public void methoda();B Public abstract double methoda();C Static void methoda(double d1){}D Public native double methoda() {}E Protected void methoda(double d1) {}
单选题Which will declare a method that is available to all members of the same package and be referenced without an instance of the class?()A abstract public void methoda ();B public abstract double inethoda ();C static void methoda (double dl) {}D public native double methoda () {}E protected void methoda (double dl) {}
多选题class BaseClass{ private float x= 1.0f; protected void setVar (float f) {x = f;} } class SubClass extends BaseClass { private float x = 2.0f; //insert code here } Which two are valid examples of method overriding?()AVoid setVar(float f) {x = f;}BPublic void setVar(int f) {x = f;}CPublic void setVar(float f) {x = f;}DPublic double setVar(float f) {x = f;}EPublic final void setVar(float f) {x = f;}FProtected float setVar() {x=3.0f; return 3.0f; }