148 What is the result? (A) Compilation fails. (B) An exception is thrown at runtime. (C) An instance of Forest is serialized. (D) An instance of Forest and an instance of Tree are both serialized.

複選題147 Which code fragment, inserted at line 4, produces the output | 12.345|? (A) System.out.printf("|%7d| \n", d); (B) System.out.printf("|%7f| \n", d); (C) System.out.printf("|%3.7d| \n", d); (D) System.out.printf("|%3.7f| \n", d); (E) System.out.printf("|%7.3d| \n", d); (AB) System.out.printf("|%7.3f| \n", d);

148 What is the result? (A) Compilation fails. (B) An exception is thrown at runtime. (C) An instance of Forest is serialized. (D) An instance of Forest and an instance of Tree are both serialized.

其他試題

148

What is the result?
(A) Compilation fails.
(B) An exception is thrown at runtime.
(C) An instance of Forest is serialized.
(D) An instance of Forest and an instance of Tree are both serialized.