JAVA編程的核心能力與專業素養試題及答案

JAVA編程的核心能力與專業素養試題及答案姓名：____________________

一、單項選擇題（每題2分，共10題）

1.下列哪個選項不是Java的基本數據類型？

A.int

B.float

C.boolean

D.String

2.在Java中，下面哪個關鍵字用于聲明一個類？

A.class

B.interface

C.enum

D.abstract

3.以下哪個語句可以正確地初始化一個整型變量？

A.inta="10";

B.inta=10;

C.inta='10';

D.inta=10L;

4.在Java中，下面哪個關鍵字用于實現多態？

A.extends

B.implements

C.super

D.instanceof

5.以下哪個方法可以用來判斷一個字符串是否為空？

A.string.isEmpty()

B.string.equals("")

C.string.length()==0

D.string.contains("")

6.下列哪個選項是Java中的異常處理關鍵字？

A.try

B.catch

C.throw

D.alloftheabove

7.在Java中，下面哪個關鍵字用于聲明一個方法？

A.method

B.function

C.def

D.public

8.以下哪個語句可以正確地創建一個對象？

A.newClass()

B.Classobject=newClass();

C.Classobject=Class();

D.Classobject=new;

9.在Java中，下面哪個關鍵字用于聲明一個數組？

A.array

B.list

C.set

D.array[]

10.以下哪個語句可以正確地輸出一個整型變量的值？

A.System.out.println(inta);

B.System.out.println(a);

C.System.out.println(aint);

D.System.out.println(intaint);

二、填空題（每空2分，共10分）

1.Java中的main方法必須定義為_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________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二、多項選擇題（每題3分，共10題）

1.以下哪些是Java中的訪問控制符？

A.public

B.private

C.protected

D.default

2.在Java中，下列哪些是繼承的關鍵字？

A.extends

B.implements

C.super

D.abstract

3.以下哪些是Java中的數據類型？

A.int

B.float

C.String

D.Object

4.以下哪些是Java中的異常處理機制？

A.try

B.catch

C.throw

D.finally

5.以下哪些是Java中的集合框架類？

A.List