2011年JAVA认证模拟题（43）

会计考友

　　Q127 Given a component, comp, and a container, cont, that is organized according to a FlowLayout, which of the following should be used to add comp to the container.
　　A cont.add(comp);
0 `9 b0 \' {7 S5 ?/ a6 G; B3 S　　B comp.add(cont);
　　C cont.addComponent(comp);
/ w6 s, s$ Z& X　　D cont.addAllComponents();
　　Q128 What is wrong with the following if statement?
　　if(x++) {
! i0 u% j+ n: E, Q9 r, E4 O. {　　y = x * z;
　　x /=2;
$ k" q& g  i5 O0 g3 W, G) T5 F　　else {
　　y = y * y;
　　++z;
* X+ [! n6 @/ f! U' Y　　｝
　　A The if condition should use a prefix operator instead of a postfix operator.
　　B The if condition must be a boolean expression, not a numeric expression
　　C There is a missing ｝ before the else.
5 F+ g( A: G$ P8 }: o　　D There is no break statement to allow control to transfer out of the if statement.
　　Q129 Which of the following are true?
/ R2 G. a3 W4 G% \* A, c' D/ d　　A The event-inheritance model has replaced the event-delegation model.
　　B The event-inheritance model is more efficient than the event-delegation model.中 华 考 试 网
$ d. t/ P! O! u( X5 I% L　　C The event-delegation model uses event listener to define the methods of event-handling classes.
1 \8 |% E# H7 {3 i& S! Z. u　　D The event-delegation model uses the handleEvent() method to support event handling.
　　Q127 A
3 A1 q  c0 q4 f8 u　　Q128 BC
) ^" n( q0 j" O; z# _% m* @. u　　Q129 C