1000道Java公司最新面试题(包过很多公司的面试题)

一、选择题(2 分/题)

、根据这个类选择所有正确的内部类：（多选）















$、下列所给出的声明中，什么会写入标准输出中？（单选）

 %&'(

%)*'+

,、下列有关方法 -用于和 .连接的正确描述是：（单选）

-./0

.//1

-./0.

..1

2-1

5



5



6

55$







 78



51

51

91

581

 >. >0＂;;)<=;＂

 ?> ?. ?>

 ?@

 >. >

 ?> ?. ?>

 ?@

 >. >10＂;;)<=;＂

 ?> ?. ?>

 ?@

 >. >1

 5

 5/BC/

 5//

 /BC/

5/BC/

'、作为文本框对象的 ，你可以添加哪一个执行接口？（多选）

@

A @

9 9@

D.@

9.9

/



59

! "



c. This code runs but nothing appears in the standard output

d. This code runs and “constructor” in the standard output

e. This code runs and writes “null”in the standard output

<试分析以下两行代码F多选

float f=3.2;

int I=f;

a. This code would not compile

b. This code would compile and iwould be set to 3.

c. The second line would compile if it were written instead as:int I = (byte)if

d. The first line would compile if it were written instead as:float f= 3.2F

b. Abutton will appear in the applet set int the exact center.

c. Abutton will appear in the applet along the top and centered horizontally.

d. Abutton will appear in the top left corner.

如果你在 GHI$J 下想要用值将关键字联系起来0则以下哪个类位首选(多选

a. Dictionary

b. HashTable

c. Properties

d. HashMap

e. TreeMap

a. class Key{}

b. abstract final class Key{}

a. 0x12

b. 320

c. 032

14.当你运行 tester2 类时,将得到什么标准输出结果?(单选)

class Tester2{

int var

Tester(double var){

This.var =(int)var

}

Tester(int var){

This(“hello”)

}

Tester(String S ){

this ();

System.out.println(s);

Tester t = new Tester(5);

}

}

a. nothing

b. “hello”

c. 5

d. “hello”following by “good -bye”

e. “good-bye”following by “hello”

tryThis();

return;}catch(IOException x1){

a. nothing

b. “exception 1”following by “finally”

c. “exception 2”following by “finally”

16.给出如下代码，如果此 snippet 在标准输出中显示为 90，则 method()调用了何种数学方

double a=90.7;

double b=method(a);

System.out.println(b);

a. abs

b. min

c. floor

d. round

e. cell

（单选）

Out.wntebytes(“Ninotchka”);

}

}

a. The code dose not compile because RandomAccessFile is not created correctly.

b. The code dose not compile because RandomAccessFile dose not implement the writeBytes()

method.

c. The code compiles and runs but throws IOException because “ran.test”does not yet exist.

d. The code compiles and runs but nothing appears int the file “ran.test”that it creates.

e. The code compiles and runs and “Ninotchka”appears in the file “ran.test” that is creates.