中兴面试测试题

1、面试测试题 2(一)、选择题(4 'X 10):( 1 ) Which of the following range of short is correct? CA. -27 27-1 B. 0 216-1 C. -215 215-1 D. -231 231-1( 2 ) Which declarations of identifiers are legal? ABEA. $persons B. TwoUsers C. *point D. this E. _endline( 3 ) Given the following code: C1 : public void modify()

2、2:int i, j, k;3:i = 100;4:while ( i > 0 ) 5:j = i * 2;6: System.out.println (" The value of j is " + j );7:k = k + 1;8:i-;9: 10: Which line might cause an error during compilation? CA. line 4 B. line 6 C. line 7 D. line 8( 4) Which of the following answer is correct to express the value

3、 8 in octal number? AA. 010 B. 0x10 C. 08 D. 0x8( 5 ) Which are not Java keywords?ABA. TRUE B. sizeof C. const D. super E. void( 6 ) Given the following code:1 : class Person 2: public void printValue(int i, int j) /. 3:public void printValue(int i)/. 4: 5: public class Teacher extends Person 6: pub

4、lic void printValue() /. 7: public void printValue(int i) /.8: public static void main(String args)9: Person t = new Teacher();10: t.printValue(10);11: 12: Which method will the statement on line 10 call? DA. on line 2 B. on line 3 C. on line 6 D. on line 7( 7 ) Given the following code:public void

5、test() try oneMethod();System.out.println("condition 1"); catch (ArrayIndexOutOfBoundsException e) System.out.println("condition 2"); catch(Exception e) System.out.println("condition 3"); finally System.out.println("finally");Which will display if oneMethod ru

6、n normally?ADA. condition 1B. condition 2C. condition 3D. finally(8) Given the following code:public class Test void printValue(int m) do System.out.println("The value is"+m); while( -m > 10 );public static void main(String arg) int i=10;Test t= new Test(); t.printValue(i);Which will be

7、 output? CA. The value is 8B. The value is 9C. The value is 10D. The value is 11(9) Given the following code: public class Personstatic int arr = new int10; public static void main(String a) System.out.println(arr1;) Which statement is correct?CA. When compilation some error will occur.B. It is corr

8、ect when compilation but will cause error when running.C. The output is zero.D. The output is null.(10) Given the following code: String s = "hello"String t = "hello" char c = 'h','e','l','l','o' ;Which return true? ADA. s.equals(t);B. t.eq

9、uals(c);C. s=t;D. t.equals(new String("hello");E. t=c.1、C2、A、B、E3、C4、A5、A、B6、D7、A、D8、C9、C10、A、D(二八填空题(4 'X 5):(1)、 String str = new String ( “ Practical ”) ;str +=“ Java ” ;共产生几个对象:5。(2)、递归函数sum(int a,int n)的返回值是数组 a的前n个元素之和int sum(int a,int n) if (n>0) return _a0+sum(a+1,n-1);else

10、_return 0;( 3)、 short s1 = 1; s1 = s1 + 1 和 short s1 = 1; s1 += 1; 那个可以编译通过，为什么第二个 第一个 丢失精度 (4)、设 int x=1,y=2,z=3, 则表达式 y+=z-/+x 的值是 _3 。( 5)、 import java.util.*;class Int private int i;public Int(int ii) i = ii; public void increment() i+; public String toString() return Integer.toString(i);public

11、class test public static void main(String args) ArrayList v = new ArrayList();for(int i = 0; i < 10; i+ )v.add(new Int(i);System.out.println("v: " + v);ArrayList v2 = (ArrayList)v.clone();for(Iterator e = v2.iterator();e.hasNext(); )(Int)e.next().increment();System.out.println("v:

12、" + v);上面这段代码输出什么 v: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9_v: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 。1、5 个2、an-1+sum(a,n-1) 或 a0+sum(a+1,n-1)return 03、第二个(第一个丢失精度)4、35、v: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9v: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10(1)、(15')请编写程序打印下列图案：(2)、 (25' )Java 异常处理机制测试继承 Exception 类编写一个自定义异常类 MyE

13、xception, 在自定义异常类中加入一个方法 getMyMessage(),此方法无参数,返回值为一个字符串，字符串内容为你的自定义异常信息："你的姓名:"+ Exception的getMessage()方法的返回值.格式如：(姓名 ：*Exception* )。编写一个类 ExceptionMaker, 在里面定义一个方法 throwException(), 在这个方法中制造一种异 常情况，抛出一个JDK自带的异常，捕捉这个异常 拼在catch处理语句中抛出你的自定义异常MyException,抛出的自定义异常要求保留原异常的信息(getMessage()的返回值);

14、再编写一个类MyExceptio nTestCase,测试你编写的前面两个类，调用第二个类中的抛出你自定义异常的方法 throwException()， 捕捉你的自定义异常 ，并输出你自定义的异常信息 .答案(三)编程题1、public class Test01 public static void main(String args) int i， j， t， c;j = 1;t = 9;c = 5;while(c > 0)for(i = 0; i <= j; i+)System.out.print(" ");j+;for(i = 0; i < t; i+

15、)2、/*System.out.print("*");t -= 2;System.out.println();c-;* 自定义的异常类*/class MyException extends Exception private String str;/* 抛出异常*return 抛出异常串*/public String getMyMessage() return str;/* 构造自定义异常*param 发生的异常*/public MyException(Exception e) Exception excep = new Exception(e); str = "zhanggenbo" + excep.getMessage();/*自定义的异常类*/ class ExceptionMaker /* 扑获异常 */public void throwException() throws ArithmeticException, MyException try int i = 3 / 0; catch (ArithmeticException e) System.out.println(e.getMessage(); throw new MyExcepti