1Z1-816無料問題集「Oracle Java SE 11 Programmer II」

質問 1

Which two statements set the default locale used for formatting numbers, currency, and percentages? (Choose two.)

（A）Locale.setDefault(Locale.Category.FORMAT, "zh-CN");

（B）Locale.setDefault("en_CA");

（C）Locale.setDefault(Locale.SIMPLIFIED_CHINESE);

（D）Locale.setDefault("es", Locale.US);

（E）Locale.setDefault(Locale.Category.FORMAT, Locale.CANADA_FRENCH);

正解：B、E 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

Examine these module declarations:

Which two statements are correct? (Choose two.)

（A）The ServiceProvider module is the only module that, at run time, can provide the com.example.api API.

（B）The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the com.example.api API.

（C）The Consumer module should require the ServiceProvider module.

（D）The placement of the com.example.api API in a separate module, ServiceAPI, makes it easy to install multiple provider modules.

（E）The ServiceProvider module should export the com.myimpl package.

正解：A、C 解答を投票する

質問 3

Given:
var fruits = List.of("apple", "orange", "banana", "lemon");
You want to examine the first element that contains the character n. Which statement will accomplish this?

（A）fruits.stream().filter(f -> f.contains("n")).forEachOrdered(System.out::print);

（B）Optional<String> result = fruits.stream().filter(f -> f.contains ("n")).findFirst ();

（C）String result = fruits.stream().filter(f -> f.contains("n")).findAny();

（D）Optional<String> result = fruits.stream().anyMatch(f -> f.contains("n"));

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 4

Which code fragment does a service use to load the service provider with a Print interface?

（A）private java.util.ServiceLoader<Print> loader = ServiceLoader.load (Print.class);

（B）private Print print = com.service.Provider.getInstance();

（C）private java.util.ServiceLoader<Print> loader = new java.util.ServiceLoader<> ();

（D）private Print print = new com.service.Provider.PrintImpl();

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 5

Given:

Which two are correct? (Choose two.)

（A）Option D

（B）Option B

（C）Option C

（D）Option A

正解：A、C 解答を投票する

質問 6

A bookstore's sales are represented by a list of Sale objects populated with the name of the customer and the books they purchased.
public class Sale {
private String customer;
private List<Book> items;
// constructor, setters and getters not shown
}
public class Book {
private String name;
private double price;
// constructor, setters and getters not shown
}
Given a list of Sale objects, tList, which code fragment creates a list of total sales for each customer in ascending order?

（A）Option D

（B）Option B

（C）Option C

（D）Option A

正解：C 解答を投票する

質問 7

Given:
List<String> longlist = List.of("Hello","World","Beat");
List<String> shortlist = new ArrayList<>();
Which code fragment correctly forms a short list of words containing the letter "e"?

（A）Option D

（B）Option B

（C）Option C

（D）Option A

正解：C 解答を投票する

質問 8

Given:

What is the result?

（A）Orange Juice Apple Pie Lemmon Ice Raspberry Tart

（B）The program prints nothing.

（C）Orange Juice

（D）The compilation fails.

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)

1Z1-816 無料問題集「Oracle Java SE 11 Programmer II」

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