SCJP 1.6版考題 157

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);