Oracle 1Z0-804 問題集

質問 1：
Given:

What is the result?
A. 0 1 2 3 4
B. 0 1 4 3 4
C. 1 1 1 1 1
D. 1 2 3 4 5
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 2：
Given: What is the result?

A. John-.-George-.-Paul-.-Ringo
B. Compilation fails
C. John George Paul -Ringo
D. John George Paul Ringo
E. An exception is thrown at runtime
正解：D
解説: (Topexam メンバーにのみ表示されます)

質問 3：
Given:

What is the result?
A. One
B. Three
C. The program runs, but prints no output.
D. Compilation fails.
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 4：
Given the code fragment:

Assume the method printNums is passed a valid array containing data. Why is this method not producing output on the console?
A. Standard error is mapped to another destination.
B. The variable number is not initialized.
C. There is a compilation error.
D. There is a runtime exception.
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 5：
Give:

Which is correct?
A. Employee takes advantage of composition.
B. Employee "has-an" Email.
C. Employee has low cohesion.
D. Employee "is-a" LetterPrinter.
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 6：
Given:

What is the result?
A. Compilation fails at line 9
B. Compilation fails at line 13
C. Compilation fails at line 11
D. Cue sports, Cue sports
E. Compilation fails at line 12
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 7：
Given: Which statement, inserted at line 8, enables the code to compile?

A. new Task.Counter().increment();
B. Task.Counter().increment();
C. new Task().new Counter().increment();
D. new Task().Counter().increment();
E. Task.Counter.increment();
正解：A

質問 8：
Given:

What is the result?
A. Compilation fails
B. Up Down
C. Up null
D. Up Up
E. An exception is thrown at runtime
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 9：
Given that myFile.txt contains:

What is the result?
A. 1: First
2: Second
3:
First
B. 1: First
2: First
3:
First
C. Compilation fails
D. IOExcepton
E. 1: First
2: Second
3:
Third
正解：A
解説: (Topexam メンバーにのみ表示されます)