JAVA认证历年真题：310-025精选题（12）

会计考友

34. Given the following method body:
% I0 s) z% A0 ~/ p% P{
if (sometest()) {
9 h! R+ z9 J$ G6 Xunsafe();
}
4 s1 T& V5 N  O3 q( k+ Oelse {
9 D6 ~3 f+ }9 z, K9 csafe();
}
}
$ d9 I( a9 @) }8 O8 qThe method "unsafe" might throw an IOException (which is not a subclass of RunTimeException). Which correctly completes the method of declaration when added at line one?
6 b: [$ m  V# L9 R" U5 QA. public void methodName() throws Exception
B. public void methodname()
3 r% b( N: Y' o8 `# x# QC. public void methodName() throw IOException
5 u0 Q. E+ h" a+ n9 C! l5 ]D. public void methodName() throws IOException
, o4 m$ o0 p( \/ E3 R- D0 FE. public IOException methodName()
3 f+ ~. n5 \/ i& vAD.
7 H+ V) F  u* _. r, k& T7 N4 B8 O35. What would be the result of attempting to compile and run the following piece of code?
  Z! Y/ \0 _  m' k- e+ N8 x
5 t& p8 r/ ~) j$ cpublic class Test {
7 a2 `' ^  n0 S& N8 h& y/ Z' Wstatic int x;
public static void main(String args[]){
System.out.println("Value is " + x);
/ e' x3 b  i/ K}
}

会计考友

</p>A. The output "Value is 0" is printed.
  F! T) V9 E- e5 A/ {* o1 G- y  gB. An object of type NullPointerException is thrown.
C. An "illegal array declaration syntax" compiler error occurs.
D. A "possible reference before assignment" compiler error occurs.
. S! Y0 b3 R$ z  r, ?) P5 DE. An object of type ArrayIndexOutOfBoundsException is thrown.
3 D/ ]" [) M" R! u7 `6 {A.
- ?8 T& W1 b5 w! b0 g36. What would be the result of attempting to compile and run the following piece of code?
public class Test {
, d2 g1 _2 H# [public int x;
) C% h$ [% m  S+ f8 F0 wpublic static void main(String args[]){
System.out.println("Value is " + x);
' r$ [; O- k# w: R2 J+ g}
" T8 ~) R. t0 c: P}
; b* p3 x) Q* @6 n" ^A. The output "Value is 0" is printed.
B. Non-static variable x cannot be referenced from a static context..
C. An "illegal array declaration syntax" compiler error occurs.
D. A "possible reference before assignment" compiler error occurs.
: i! P+ D& t0 u7 t/ H8 w$ n9 eE. An object of type ArrayIndexOutOfBoundsException is thrown.
/ Z" a! C7 S  m0 B2 `" S: J% U5 Q8 E* AB.