"SCJP 1.6版考題 157" 修訂間的差異
出自 陳富國維基館
(新頁面: Given that c is a reference to a valid java.io.Console object, and: 11. String pw = c.readPassword("%s", "pw: "); 12. System.out.println("got " + pw); 13. String name = c.readLine(...) |
(無差異)
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於 2013年3月30日 (六) 02:41 的最新修訂
Given that c is a reference to a valid java.io.Console object, and:
11. String pw = c.readPassword("%s", "pw: ");
12. System.out.println("got " + pw);
13. String name = c.readLine("%s", "name: ");
14. System.out.println(" got", name);
If the user types fido when prompted
for a password, and then responds
bob when prompted for a name,
what is the result?
A. pw:
got fido
name: bob
got bob
B. pw: fido
got fido
name: bob
got bob
C. pw:
got fido
name: bob got bob
D. pw: fido
got lido
name: bob got bob
E. Compilation fails.
F. An exception is thrown at runtime.
解答
Ans: E
解說:
此程式片段有二個錯誤
String pw = c.readPassword(“%s”, “pw: ”); 改：
char[] pw = c.readPassword("%s", "pw: ");
System.out.println(“ got”, name); 改 System.out.println(" got“ + name);
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