Fast2test 1z0-808問題集PDFで100%合格保証付き [Q68-Q89]

Fast2test 1z0-808問題集PDFで100%合格保証付き

1z0-808ブレーン問題集でリアル試験最新問題2024年07月11日には398問題

Oracle 1z1-808 認定試験は、Java SE 8 プログラマーとして認定を受けたい個人のスキルと知識をテストするために設計されています。この試験は、Java 開発の分野でのスキルと専門知識を認めるための重要なステップです。これは、卓越性とスキルの証明となる認定資格です。

質問 # 68
Given the code fragment:

What is the result?

A. 1 2 3 4followed by an ArrayIndexOutOfBoundsException
B. 1 2 3
C. Compilation fails.
D. 1 2 3 4

正解：B

解説：

質問 # 69
This grid shows the state of a 2D array:

The grid is created with this code:

Which line of code, when inserted in place of //line n1, adds an X into the grid so that the grid contains three consecutive Xs?

A. grid[2][3] = 'X';
B. grid[2][1] = 'X';
C. grid[3][2] = 'X';
D. grid[3][1] = 'X';

正解：A

質問 # 70
Given the code fragment:

What is the result?

A. 2 true 1
B. 2 true 3
C. 2 false 3
D. 2 false 1
E. 3 false 3
F. 3 false 1
G. 3 true 1

正解：G

解説：
The length of the element with index 0, {0, 1, 2}, is 3. Output: 3 The element with index 1, {3, 4, 5, 6}, is of type array. Output: true
The element with index 0, {0, 1, 2} has the element with index 1: 1. Output: 1

質問 # 71
Given the code fragment:

And given the requirements:
If the value of the qty variable is greater than or equal to 90, discount = 0.5 If the value of the qty variable is between 80 and 90, discount = 0.2 Which two code fragments can be independently placed at line n1 to meet the requirements? (Choose two.)

A. Option D
B. Option C
C. Option E
D. Option B
E. Option A

正解：B、E

質問 # 72
View the exhibit.

Given the code fragment:

Which change enables the code to print the following?
James age: 20
Williams age: 32

A. Replacing line 5 with public static void main (String [] args) throws MissingInfoException, AgeOutofRangeException {
B. Enclosing line 6 and line 7 within a try block and adding: catch (missingInfoException e2) { //code goes here} catch (AgeOutofRangeException e3) {//code goes here}
C. Replacing line 5 with public static void main (String [] args) throws.Exception {
D. Enclosing line 6 and line 7 within a try block and adding: catch(Exception e1) { //code goes here} catch (missingInfoException e2) { //code goes here} catch (AgeOutofRangeException e3) {//code goes here}

正解：D

質問 # 73
You are asked to develop a program for a shopping application, and you are given the following information:
-The application must contain the classes Toy, EduToy, and consToy. The Toy class is the
superclass of the other two classes. -The int caicuiatePrice (Toy t) method calculates the price of a toy. -The void printToy (Toy t) method prints the details of a toy.
Which definition of the Toy class adds a valid layer of abstraction to the class hierarchy?

A. Option D
B. Option B
C. Option C
D. Option A

正解：D

質問 # 74
Given the code fragment:

Assume that the system date is June 20, 2014. What is the result?

A. An exception is thrown at runtime.
B.
C.
D. Compilation fails.

正解：B

質問 # 75
Given the code fragment:
What is the result?
Invalid Name
A:

B:

C:

D:

A. Option D
B. Option C
C. Option B
D. Option A

正解：B

質問 # 76
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 2 and 3 CANNOT be implemented by using the standard for loop.
B. Requirement 3 CANNOT be implemented by using either the enhanced for loop or the standard for loop.
C. Requirements 1, 2, and 3 can be implemented by using the enhanced for loop.
D. Requirements 1, 2, and 3 can be implemented by using the standard for loop.
E. Requirement 2 can be implemented by using the enhanced for loop.

正解：A、D

質問 # 77
What is the proper way to defined a method that take two int values and returns their sum as an int value?

A. int sum(int first, second) { return first + second; }
B. sum(int first, int second) { return first + second; }
C. int sum(int first, int second) { first + second; }
D. void sum (int first, int second) { return first + second; }
E. int sum(int first, int second) { return first + second; }

正解：E

解説：
Incorrect answers:
A: no return statement

質問 # 78
Which two actions will improve the encapsulation of a class?

A. Changing the return type of a method to void
B. Removing the public modifier from a class declaration
C. Changing the access modifier of a field from public to private
D. Returning a copy of the contents of an array or ArrayList instead of a direct reference

正解：C、D

質問 # 79
Given the content of three files:

Which statement is true?

A. Only the B.java file compiles successfully.
B. Only the A.Java file compiles successfully.
C. The A.Java and B.java files compile successfully.
D. The B.java and C.java files compile successfully.
E. The A.Java and C.java files compile successfully.
F. Only the C.java file compiles successfully.

正解：B

質問 # 80
Given the code fragment:

What is the result?
A:

B: Compilation fails only at line n1.
C: Compilation fails only at line n2.
D: Compilation fails only at line n3.
E: Compilation fails at both line n2 and line n3.

A. Option E
B. Option B
C. Option D
D. Option A
E. Option C

正解：C

質問 # 81
The protected modifier on a Field declaration within a public class means that the field ______________.

A. Can be read and written from this class and its subclasses defined in any package
B. Can be read but not written from outside the class
C. Can be read and written from this class and its subclasses only within the same package
D. Cannot be modified

正解：A

解説：
Reference: http://beginnersbook.com/2013/05/java-access-modifiers/

質問 # 82
Given: What is the result?

A. myStr: 9009, myNum: 9009
B. myStr: 7007, myNum: 9009
C. Compilation fails
D. myStr: 7007, myNum: 7007

正解：B

質問 # 83
Given:

What is the result?

A. true true
B. true false
C. false true
D. false false
E. Compilation fails.

正解：B

解説：

質問 # 84
Given the definitions of the MyString class and the Test class:

What is the result?

A. Option D
B. Option C
C. Option B
D. Option A

正解：B

質問 # 85
Given the code fragment:

What is the result?

A. A B C D Work done
B. A B C Work done
C. Compilation fails
D. A Work done

正解：D

質問 # 86
Given:

And the commands: Javac Test.java Java Test 12345
What is the result?

A. Number us : 12345
B. A NullPointerException is thrown at runtime
C. AnArrayIndexOutOfBoundException is thrown at runtime.
D. A NumberFormatException is thrown at runtime

正解：A

質問 # 87
Which statement is true about Java byte code?

A. It can run on any platform that has the Java Runtime Environment.
B. It can run on any platform only if that platform has both the Java Runtime Environment and a Java compiler.
C. It can run on any platform only if it was compiled for that platform.
D. It can run on any platform.
E. It can run on any platform that has a Java compiler.

正解：A

質問 # 88
Given:

What is the result?