2011年JAVA认证模拟题（6）

会计考友

Q16 Which of the following are true? 　　A The AWT automatically causes a window to be repainted when a portion of a window has been minimized and then maximized.
4 o9 L6 ?4 r1 r& m# Y　　B The AWT automatically causes a window to be repainted when a portion of a window has been covered and then uncovered.
$ g- t: M) V$ A+ I, d　　C The AWT automatically causes a window to be repainted when an element of the window has been changed.
+ d7 Q: ^  \! r2 W% H; k7 y% a( a　　D The AWT doesn’t automatically repaint window.
　　Q17 Which statement (exactly one)is true about the following program?
　　class Question {
　　public static void main(String[] args)
　　{
$ R$ j( Z4 e7 y! r# q　　double d1 = 1.0;
　　double d2 = 0.0;
0 Z+ k& R6 U4 w+ D$ H4 L　　byte b =1;
& M' p1 A. B% T4 @# i; j　　d1 = d1/d2;

会计考友

</p>　　b = (byte) d1;
　　System.out.print(b);
　　｝
( H$ j' @* Y8 V% \. j) Z　　｝
　　A It results in the throwing of an ArithmeticExcepiton.
　　B It results in the throwing of a DivedeByZeroException.
$ J2 M6 Q- W9 S  X　　C It displays the value 1.5.
　　D It displays the value –1.
" z  `6 x- H- P6 Z1 Q: W& }　　Q18 Which of the following must be true of the object thrown by a throw statement?
! u: z4 e8 J9 e! E　　A It must be assignable to the Throwable type.
, }  t: i$ Q/ G; H6 [# ?　　B It must b e assignable to the Error type.
　　C It must be assignable to the Exception type.
　　D It must be assignable to the String type.
　　Q016 AB
" L2 ]8 I2 K! ~* q　　Q017 D
　　Q018 A