2011年JAVA认证模拟题（14）

会计考友

　Q 40 What is the output of the following program? 　　class Question {
　　String s = “Outer”;
　　public static void main (String [] args)
) I3 {% f4 r; c3 {9 f& @　　{
　　S2 s2 = new S2();
　　s2.display();
　　｝
# p& n8 J% o3 L　　｝
1 m/ x* G, b- q% c$ P7 E' j! M　　class S1 {
" H6 t1 I0 I" [; P' I　　String s = “S1”;
　　void display() {
　　System.out.println(s);
4 n0 p6 R' ^: b4 |7 s, a; ^　　｝
2 d; b! ^0 v4 Y2 B1 i　　｝
1 a6 {5 I. ?+ G; P( S" ?+ H' P/ z( M　　class S2 extends S1 {
! F# V6 D2 k- l" c　　String s = “S2”;

会计考友

</p>　　｝
. a$ Z/ K9 G% P3 F　　A S1
　　B S2
　　C null
　　D Outer
　　Q41 What is the output of the following program?
4 r$ f, P& r3 q& R1 l　　class Question {
　　static int i = 1;
" }* L, i$ f, |( _9 L  m, T( B% O　　static {
: H$ P5 ?8 e3 W1 `9 \　　++i;
　　｝
+ F: n( k" o5 [0 ]3 o- ^　　public static void main (String[] args)
　　{
& E9 ^- T& F9 ]3 H  p: `　　increment (i, 5);
) }* R: k6 q  U: R+ M$ I3 }/ B. {　　display(i);
　　｝
　　static void increment(int n, int m) {
' ?' [  L# U6 n9 j# e　　n+=m;
　　｝
5 x( |. _! R. p% {9 P. ?5 Y2 n3 \, w　　static void display (int n) {
/ m. }7 X7 E1 U/ I  e" G9 K/ E　　System.out.print(n);
　　｝
* C7 O* T" A. n
　　static {

会计考友

</p>　　++i;
　　｝
　　｝
　　A 1
/ @  ]) \& m) r2 C　　B 3
　　C 6
, j2 v- \- M5 B) P4 g　　D 7
　　Q 42 Which of the following are true?
" i# l$ O8 y; I　　A A component may handle its own events by adding itself as an event listener.
　　B A component may handle its own events by overriding its event-dispatching method.
　　C A component may not handle its own events.
5 y- o" S' X" r3 M　　D A component may handle its own events only if it implements the h andleEvent() method.
　　Q040 A
　　Q041 B
2 m( V& I* N0 @* |' T　　Q042 AB