SCJP題庫第169題
Given:
12. NumberFormat nf = NumberFormat.getInstance();
13. nf.setMaximumFractionDigits(4);
14. nf.setMinimumFractionDigits(2);
15. String a = nf.format(3.1415926);
16. String b = nf.format(2);
Which two statements are true about The result if the default locale is Locale.US? (Choose two.)
A. The value of b is 2.
B. The value of a is 3.14.
C. The value of b is 2.00.
D. The value of a is 3.141.
E. The value of a is 3.1415.
F. The value of a is 3.1416.
G. The value of b is 2.0000.
Ans: CF
解說:
那二個敘述是真的？ 預設的locale是Locale.US
nf.setMaximumFractionDigits(4);
設定小數位置最大4位，若發生截位，則進行4捨5入，如F
nf.setMinimumFractionDigits(2);
設定小數位置最小2位，如C
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