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[主观题]

public class boy{}public class girl{}public class student extends boy,girl{}上述定义（)

public class boy{}public class girl{}public class student extends boy,girl{}上述定义()

A、正确

B、错误，Java不允许多重继承

C、错误boy和girl应该用

D、隔开

E、错误，应该使用implements关键字

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发布时间：2022-12-04

更多“public class boy{}public class girl{}public class student extends boy,girl{}上述定义（)”相关的问题

第1题

public class student{private String name;}public class boy student extends student{}pu

blic class girl student extends student{}上述定义()

A、正确

B、错误，Java不允许多重继承

C、错误boy和girl应该用

D、隔开

E、错误，应该使用implements关键字

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第2题

Look! The boy who gave a_____answer to your question in class is running very_____.A．fast;

Look! The boy who gave a_____answer to your question in class is running very_____.

A．fast; fast

B．quick; quick

C．quick; fast

D．fast; quick

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第3题

Peter,the tallest boy Ain our class, Bare going back to Chis hometown Dnext week.A．B．C．D．

Peter,the tallest boy Ain our class, Bare going back to Chis hometown Dnext week.

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第4题

That lazy boy went to class before he had prepared his lesson.

A.那个懒惰的小孩不预习就去上课。

B.那个懒惰的小孩上课之前没有预习。

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第5题

The author______because she wanted very much to help the boy.A．broadcast the storyB．wrote

The author______because she wanted very much to help the boy.

A．broadcast the story

B．wrote a letter to the boy

C．reported the story to the public

D．wrote to a doctor and a nurse for help

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第6题

下列Java源文件代码片段中，()是不正确的。

A.package t;public class A{}

B.import java.io.*;package t;public class A{}

C.import java.io.*;import java.awt.*;public class A{}

D.import java.io.*;class A{}public class B{}

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第7题

可以通过“new J_Class()”生成类 J_Class 的实例对象的类定义是()。

A.public class J_Class { public J_Class(void) { } }

B.public c lass J _Class { }

C.public class J_Class { public J_Class(String s) { } }

D.public class J_Class { public void J_Class() { } public J_Class(String s) { }

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第8题

C#中，下列MyClass的定义是否合法?() Public class Base1{} Public class Base2{} Public MyClass : Base1,Base2

C#中，下列MyClass的定义是否合法？（) Public class Base1{} Public class Base2{} Public MyClass : Base1,Base2

A.正确

B.错误

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第9题

下面符合封装的概念的程序是（)A、public class Date{private int year;public int getYear（){r

A.public class Date{private int year;public int getYear(){return year;}public void SetYear(int y){year=y;}} ;

B.protected class Date{private int year;public int getYear(){return year;}public void SetYear(int y){year=y;}} ;

C.public class Date{public int year;public int getYear(){return year;}public void SetYear(int y){year=y;}} ;

D.public class Date{private int year;private int getYear(){return year;}rivate void SetYear(int y){year=y;}}

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第10题

已知定义public class Employee{public String name;public void print（){System.out.printl

已知定义public class Employee{public String name;public void print(){System.out.println("Employee.");}}public class Manager extends Employee{public String Depart;public void print(){System.out.println("Manager.");}}执行下面语句Manager m=new Manager();m

A、Employee Manager

B、Manager Employee

C、Tom Jack

D、Jack Tom

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第11题

下列类定义中不正确的是()

A.public class A implements B,D{}

B.public class A extends B implements C,D,E{}

C.public class A extends B,D{}

D.public class A extends B{}

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