1z0-808無料問題集「Oracle Java SE 8 Programmer I」

質問 1

Given the code fragment:

What is the result?

（A）Compilation fails at both line n1 and line n2.

（B）Compilation fails only at line n2.

（C）Compilation fails only at line n1.

（D）Jesse 25
Walter 52

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 2

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 C

（D）Option A

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 3

Given the following array:

Which two code fragments, independently, print each element in this array?

（A）Option E

（B）Option D

（C）Option B

（D）Option C

（E）Option A

（F）Option F

正解：A、C 解答を投票する

質問 4

Given the code fragment:

Which two code fragments inserted at line 10 print ****?

（A）

（B）

（C）

（D）

（E）

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 5

Which two statements are true for a two-dimensional array of primitive data type?

（A）All methods of the class object may be invoked on the two-dimensional array.

（B）It cannot contain elements of different types.

（C）At the declaration time, the number of elements of the array in each dimension must be specified.

（D）The length of each dimension must be the same.

正解：A、B 解答を投票する

質問 6

Given:

The class is poorly encapsulated.
You need to change the circle class to compute and return the area instead.
Which three modifications are necessary to ensure that the class is being properly encapsulated?
(Choose 3)

（A）When the radius is set in the Circle constructor and the setRadius () method, recomputed the area and store it into the area field

（B）Remove the area field.

（C）Change the getArea () method public double getArea () { return area; }

（D）Change the getRadius () method: public double getRadius () { area = Math.PI * radius * radius; return radius; }

正解：A、B、C 解答を投票する

質問 7

Given:

What is the result?

（A）A ClassCastException is thrown at runtime.

（B）Base
DerivedB

（C）DerivedB
DerivedA

（D）Base
DerivedA

（E）DerivedB
DerivedB

正解：C 解答を投票する

質問 8

Consider following method

Which statement is true?

（A）This method is invalid.

（B）None of above.

（C）This method can be used only in an interface.

（D）This method can return anything.

（E）This method can be used only in an interface or an abstract class.

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 9

Given:

What is the result?

（A）Marrown
String out of limits
JesOran

（B）Marrown
String out of limits

（C）Marrown
String out of limits
Array out of limits

（D）Marrown
NanRed
JesOran

正解：A 解答を投票する

質問 10

Which two are valid declarations of a two-dimensional array?

（A）int [2][2] array2D;

（B）int [][] array2D;

（C）int[] array2D[];

（D）int[][] array2D[];

（E）int array2D[];

正解：B、C 解答を投票する

質問 11

Given the code fragment:

And given the requirements:
1. Process all the elements of the array in the reverse order of entry.
2. Process all the elements of the array in the order of entry.
3. Process alternating elements of the array in the order of entry.
Which two statements are true? (Choose two.)

（A）Requirements 1, 2, and 3 can be implemented by using the standard for loop.

（B）Requirements 1, 2, and 3 can be implemented by using the enhanced for loop.

（C）Requirements 2 and 3 CANNOT be implemented by using the standard for loop.

（D）Requirement 2 can be implemented by using the enhanced for loop.

（E）Requirement 3 CANNOT be implemented by using either the enhanced for loop or the standard for loop.

正解：A、C 解答を投票する

質問 12

Given:

What is the result?

（A）An exception is thrown at runtime

（B）nbo

（C）bo

（D）nb

（E）box

正解：A 解答を投票する

1z0-808 無料問題集「Oracle Java SE 8 Programmer I」

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