1z0-808問題集を掴み取れ![最新2021]Oracle試験合格させます
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Oracle 1z0-808 認定試験の出題範囲:
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質問 103
Given the code fragment:
What is the result?
- A. Compilation fails only at line n1.
- B. Compilation fails at both line n2 and line n3.
- C. Compilation fails only at line n2.
- D.

- E. Compilation fails only at line n3.
正解: E
質問 104
What is the name of the Java concept that uses access modifiers to protect variables and hide them within a class?
- A. Instantiation
- B. Encapsulation
- C. Polymorphism
- D. Abstraction
- E. Inheritance
正解: B
質問 105
Given the code fragment:
What is the result?
- A. A NullPointerException is thrown at runtime.
- B. Element 0Element 1
- C. Null element 0Null element 1
- D. NullNull
正解: A
質問 106
Given:
And given the code fragment:
and this output:
Canine 60 Long
Feline 80 Short
Which two modifications enable the code to print this output? (Choose two.)
. Replace line n1 with:
- A.

Replace line n1 with: - B.

Replace line n2 with: - C.

Replace line n2 with: - D.

- E.

Replace line n1 with:
正解: D,E
質問 107
Given:
What is the result?
- A. 10 : 22 : 22
- B. 10 : 22 : 20
- C. 10 : 22 : 6
- D. 10 : 30 : 6
正解: D
質問 108
Given:
What is the result?
- A. Compilation fails
- B. myStr: 7007, myNum: 7007
- C. myStr: 7007, myNum: 9009
- D. myStr: 9009, myNum: 9009
正解: C
質問 109
Given:
Which option enables the code to compile?
- A. Option D
- B. Option B
- C. Option A
- D. Option C
正解: D
質問 110
Given:
What is the result?
- A. 10:20
- B. Compilation fails at line n2
- C. Compilation fails at line n1
- D. 0:20
正解: B
質問 111
Given:
What is the result?
- A. true:true
- B. false:true
- C. true:false
- D. false:false
正解: B
質問 112
Given the code from the Greeting.Java file:
Which set of commands prints Hello Duke in the console?
- A. Option D
- B. Option B
- C. Option A
- D. Option C
正解: D
質問 113
Given:
And given the commands:
What is the result?
- A. Java SE
- B. A NullPointerException is thrown at runtime.
- C. Java EE
- D. Compilation fails at line n1.
正解: C
質問 114
Given the code fragment: Assume that the system date is June 20, 2014. What is the result?

- A. Option D
- B. Option B
- C. Option C
- D. Option A
正解: D
質問 115
Given the following code for the classes MyException and Test:
What is the result?
- A. A
- B. A compile time error occurs at line n1
- C. B
- D. Either A or B
- E. AB
正解: C
質問 116
Given the code fragment from three files:
Which code fragment, when inserted at line 2, enables the code to compile?
- A. Option D
- B. Option B
- C. Option A
- D. Option E
- E. Option C
正解: D
質問 117
Given the following code for the classes MyException and Test:
What is the result?
- A. A B
- B. A
- C. A compile time error occurs at line n1
- D. B
- E. Either A or B
正解: D
質問 118
Given the code fragment:
Which code fragment, when inserted at line n1, enables the App class to print Equal?
- A. Option D
- B. Option A
- C. Option B
- D. Option C
正解: C
質問 119
Given the code fragment:
What is the result?
- A. Execution completes normally, and Ready to use is printed to the console.
- B. A runtime error is thrown in the thread "main".
- C. Execution terminates in the second catch statement, and caught an Exception is printed to the console.
- D. Execution terminates in the first catch statement, and caught a RuntimeException is printed to the console.
- E. The code fails to compile because a throws keyword is required.
正解: B
質問 120
Given the code fragment:
Which code fragment, inserted at line n1, pints The Top element: 30?
- A. Option D
- B. Option B
- C. Option C
- D. Option A
- E. Option E
正解: D
質問 121
Given:
public class MyClass {
public static void main(String[] args) {
while (int ii = 0; ii < 2) {
ii++;
System.out.println("ii = " + ii);
}
}
}
What is the result?
- A. Compilation fails
- B. The program prints nothing
- C. The program goes into an infinite loop with no output
- D. ii = 1 ii = 2
- E. The program goes to an infinite loop outputting: ii = 1 ii = 1
正解: A
解説:
The while statement is incorrect. It has the syntax of a for statement.
The while statement continually executes a block of statements while a particular condition is true. Its syntax can be expressed as:
while (expression) { statement(s) } The while statement evaluates expression, which must return a boolean value. If the expression evaluates to true, the while statement executes the statement(s) in the while block. The while statement continues testing the expression and executing its block until the expression evaluates to false.
Reference: The while and do-while Statements
質問 122
Given the code fragment:
What is the result?
- A. A B D E
- B. Compilation fails.
- C. A B C D E
- D. A B C
正解: B
質問 123
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