SCJP題庫第123題
Given:
11. public static void parse(String str){
12. try{
13. float f = Float.parseFloat(str);
14. }catch(NumberFormatException nfe){
15. f = 0;
16. }finally{
17. System.out.println(f);
18. }
19. }
20. public static void main(String[] args) {
21. parse("invalid");
22. }
What is the result?
A. 0.0
B. Compilation fails.
C. A ParseException is thrown by the parse method at runtime.
D. A NumberFormatException is thrown by the parse method at runtime.
Ans: B
解說:
F第15行與17行的f都是未宣告，宣告的f在第13行僅供try區塊中使用
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