Ikk：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(...

2013-03-30T02:41:40Z

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(...

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("%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.

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<span style="font-size:medium;">解答</span>

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<span style="font-size: medium;">Ans: E </span>

<span style="font-size:medium;"> 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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{{SCJP 1.6版考題講解}}

SCJP 1.6版考題 157 - 修訂歷史

Ikk：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(...