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[考试试题] 2011年JAVA认证模拟题(35)

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发表于 2012-8-4 12:33:16 | 显示全部楼层 |阅读模式
 Q103 If you ran the following program, what lines would be included in its output?   class Question {. q- X) ~# F% n. B8 p
  public static void main (String[] args)8 R1 c( G/ o9 M6 z
  {
$ P+ t+ T0 i2 f( G/ q' K, d  int i,j;6 d* d4 L: z6 `8 @; [2 e1 `1 S$ \
  for(i=0, j=0; i+j < 20; ++i, j += i--)5 e9 e9 L: {% I
  {
2 q1 z* |: ^5 q% k; z+ t3 r  e  System.out.println(i+j);2 X; Y. ~+ F2 N; S
  }
1 z3 i: x* K0 t0 R9 b  }. [! B6 m" p6 Y) B3 X7 F
  }8 ^, A# F( g2 [
  A 5. S# d4 L3 Y- D  R6 J8 Z0 ?' w9 r% Q& U
  B 88 w) S4 }- U/ \6 A0 R# W# i
  C 13
- L4 ]7 L% ?4 F6 ^  D The program cannot be compiled because the for statement’s syntax is incorrect.
) V  q  b$ _. B  Q104 What is the value of 9 + 8 % 7 + 6?
% Z1 ^  T. f' K) g  A 17
: s; y% m: }/ |0 a4 `2 N7 [7 ^  B 16
9 I8 B+ _0 _/ I! z9 q  C 13
- W" E3 f* f: b. S2 g' [2 r; N  D 4: x  X, c* o: ]
  Q105 At which line in the following code is the Vector object created in line 4 first subject to garbage collection?3 U' X, w+ f* b# H0 {0 K
  1. import java.util.*;$ f% Z2 \/ E- M
  2. public class Question {
& v3 w7 |9 H/ M2 @- B; B+ m  3. public static void main(String[] args) {
  P( F) {+ N. ]5 |% v  4. Vector v1 = new Vector();
7 m1 a! n5 @, F9 k  5. Vector v2 = new Vector();
- g! v" a) f$ ]8 ~+ T; I  6. v1.add(“This”);/ W" r) l* z2 x) i
  7. v1.add(v2);9 L7 n, x* l6 J& y; v+ \
  8. String s = (String) v1.elementAt(0);) W* A, [2 s' a/ t
  9. v1 = v2;
: }) _% M& J: f5 Q: d( E4 h  10. v2 = v1;
& ?+ x0 C/ l: j% ^0 z: [# ]+ ?( \# L7 O  11. v1.add(s);
! H5 e& F' [# d) X8 X: k$ b  12. }5 V1 F( G0 ^( v- D3 o
  13.}
" ^0 \! Q3 k* X& _+ @2 R$ V  A line 51 ]+ i( ~1 Z- A1 u/ y8 [; D
  B line 6
9 e6 c7 ~0 M- D: L, \: b" v  C line 8# r6 l  u+ T8 P1 k" I
  D line 9$ h7 }- Q. ?, Y1 d1 v( I
  Q103 ABC
8 n5 P0 m+ z" K& X" |  Q104 B
* M9 |* H  @/ J* }  Q105 D
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