[2024年03月22日] トップクラスの1z0-808練習試験問題 [Q58-Q82]

[2024年03月22日] トップクラスの1z0-808練習試験問題

実際問題を使って1z0-808無料問題集サンプル問題と練習テストエンジン

この試験は、複数選択問題で構成され、Javaの基礎、Javaデータ型の扱い方、演算子と決定構造の使用、配列の作成と使用、およびメソッドとカプセル化の扱い方などのトピックに分かれています。Java API、例外処理、およびファイルとストリームの扱い方に関する質問も含まれています。

Oracle 1z0-808試験は、Javaプログラミングのすべての重要なトピックをカバーする包括的な試験です。この試験に合格することは、候補者がJavaプログラミングのコンセプトを確実に理解し、実世界のシナリオに適用できることを示しています。この認定は、世界中の組織に認められ、Java開発のキャリアに興味を持つ人にとって貴重な資産です。

Oracle 1z1-808（Java SE 8プログラマーI）試験は、認定Java開発者になりたい個人のための認定試験です。試験は、基本構文の理解、クラスとオブジェクトの操作、コンストラクタとメソッドの使用、例外の処理、配列とコレクションの操作など、候補者のJavaのコアコンセプトとスキルの知識をテストするために設計されています。試験はまた、Java APIで動作し、シンプルなJavaアプリケーションを開発する能力を測定するように設計されています。

質問 # 58
Given the following segment of code :

Which two statements, if either were true, would make the code compile?

A. Vehicleis a superclass of Motorcycle.
B. Vehicleand Motorcycleboth extend the Transportation superclass.
C. Motorcycleis an interface that implements the Vehicleclass.
D. Vehicleand Motorcycleboth implement the Transportationinterface
E. Vehicleis an interface that is implemented by the Motorcycleclass.
F. Motorcycleis a superclass of Vehicle.

正解：A、B

質問 # 59
Given:

What is the result?

A. 100 0 : 100 0 :
B. 100 200 : 100 200 :
C. 100 0 : 100 200:
D. 100 200 : 100 0 :

正解：A

質問 # 60
Given the code fragment:

What is the result?
2012-02-10 00:00

A. 2012-02-10
B. 2012-01-30
C.
D. A DateTimeExceptionis thrown at runtime.

正解：A

解説：

質問 # 61
Given the code fragment:

Which two modifications, when made independently, enable the code to print joe:true: 100.0?

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

正解：B、C

質問 # 62
Given the code fragment:

What is the result?

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

正解：A

質問 # 63
Given:

What is the result?

A. e, ei, o
B. a, ei, o
C. a,eo, o
D. e, eo, o

正解：C

質問 # 64
Given the code fragment:

What is the result?
2012-02-10

A. 2012-01-30
B. A DateTimeExceptionis thrown at runtime.
C. 2012-02-10 00:00
D.

正解：D

質問 # 65
Given:

What is the result?

A. Welcome Log 1:2
B. Welcome Log 2:1
C. Hello Log 1:2
D. Hello Log 2:2

正解：D

解説：

質問 # 66
Given:

A. e, e i, o
B. a, e i, o
C. a, e o, o
D. e, e o, o

正解：C

質問 # 67
Which is true about the switchstatement?

A. It must contain the defaultsection.
B. Its caselabel literals can be changed at runtime.
C. Its expression can evaluate to a collection of values.
D. The breakstatement, at the end of each case block, is optional.

正解：D

解説：
Explanation/Reference: https://www.geeksforgeeks.org/switch-statement-in-java/

質問 # 68
Given the code fragment:

Which three lines fail to compile?

A. Line 11
B. Line 9
C. Line 8
D. Line 7
E. Line 12
F. Line 10

正解：D、E、F

質問 # 69
Give:
Public Class Test {
}
Which two packages are automatically imported into the java source file by the java compiler?

A. Javax.net
B. Java.util
C. Java.awt
D. Java.*
E. The package with no name
F. Java.lang

正解：E、F

解説：
For convenience, the Java compiler automatically imports three entire packages for each source file: (1) the package with no name, (2) the java.lang package, and (3) the current package (the package for the current file).
Note:Packages in the Java language itself begin with java. or javax.

質問 # 70
Which three statements are benefits of encapsulation?

A. Enables the class implementation to protect its invariants
B. Allows a class implementation to change without changing t he clients
C. Enables multiple instances of the same class to be created safely
D. Permits classes to be combined into the same package
E. Protects confidential data from leaking out of the objects
F. Prevents code from causing exceptions

正解：A、B、E

質問 # 71
Given the code fragment:

What is the result?

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

正解：A

質問 # 72
Given the code fragment:

What is the result?

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

正解：A

解説：

質問 # 73
Given the following class declarations:
-public abstract class Animal -public interface Hunter -public class Cat extends Animalimplements Hunter -public class Tiger extends Cat
Which answer fails to compile?

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

正解：C

質問 # 74
Given the following array:

Which two code fragments, independently, print each element in this array? (Choose two.)

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

正解：B、D

質問 # 75
Given the following classes: Which two options fail to compile when placed at line n1 of the main method?

A. director.salary = 80_000;
B. employee.budget = 200_000;
C. manager.budget = 1_000_000;
D. manager.stockOption = 500;
E. employee.salary = 50_000;
F. director.stockOptions = 1_000;

正解：B、D

質問 # 76
Given the code snippet from a compiled Java source file:

Which command-line arguments should you pass to the program to obtain the following output?
Arg is 2

A. java MyFile 0 1 2 3
B. java MyFile 1 3 2 2
C. java MyFile 2 2 2
D. java MyFile 1 2 2 3 4

正解：B

質問 # 77
Given the code fragment:

Which three code fragments can be independently inserted at line n1 to enable the code to print one? (Choose three.)

A. Double x = 1;
B. Byte x = 1;
C. short x = 1;
D. Integer x = new Integer ("1");
E. Long x = 1;
F. String x = "1";

正解：B、C、D

質問 # 78
Given:

What is the result?

A. Welcome Log 1:2
B. Welcome Log 2:1
C. Hello Log 1:2
D. Hello Log 2:2

正解：D

解説：

質問 # 79
Given the code fragment:

Which two code fragments can be independently inserted at line n1 to enable the code to print the elements of the array in reverse order?