최신 1Z0-819 무료덤프 - Oracle Java SE 11 Developer

문제1

Given these classes:

And this code fragment:

What is the result?

A. The program throws an exception.

B. The program prints: A

C. The program prints: c

D. The program fails to compile.

정답: A

문제2

Which module-info.java is correct for a service provider for a print service defined in the PrintServiceAPI module?

A. module PrintServiceProvider {
requires PrintServiceAPI;
uses com.provider.PrintService;
}

B. module PrintServiceProvider {
requires PrintServiceAPI;
exports org.printservice.spi;
}

C. module PrintServiceProvider {
requires PrintServiceAPI;
provides org.printservice.spi.Print with
com.provider.PrintService;
}

D. module PrintServiceProvider {
requires PrintServiceAPI;
exports org.printservice.spi.Print with
D18912E1457D5D1DDCBD40AB3BF70D5D
com.provider.PrintService;
}

정답: B

문제3

Given:

Which is true?

A. The code throws an exception at runtime.

B. The code does not compile.

C. The code prints 25.

D. The code compiles but does not print any result.

정답: B

문제4

Which three annotation uses are valid? (Choose three.)

A. Function<String, String> func = (var @NonNull x) -> x.toUpperCase();

B. var v = "Hello" + (@Interned) "World"

C. var obj = new @Interned MyObject();

D. var myString = (@NonNull String) str;

E. Function<String, String> func = (@NonNull var x) -> x.toUpperCase();

F. Function<String, String> func = (@NonNull x) -> x.toUpperCase();

정답: A,C,F

문제5

Given:

Which statement on line 1 enables this code to compile?

A. Function<Integer> f = n -> n * 2;

B. Function<Integer, Integer> f = n -> n * 2;

C. Function<int> f = n -> n * 2;

D. Function f = n -> n * 2;

E. Function<int, int> f = n -> n * 2;

정답: B

설명: (DumpTOP 회원만 볼 수 있음)

문제6

Which two commands are used to identify class and module dependencies? (Choose two.)

A. java --show-module-resolution

B. java Hello.java

C. jmod describe

D. jdeps --list-deps

E. jar --show-module-resolution

정답: A,D

문제7

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 C

C. Option B

D. Option A

정답: B

문제8

Examine these module declarations:

Which two statements are correct? (Choose two.)

A. The ServiceProvider module should export the com.myimpl package.

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

C. The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the

D. The Consumer module should require the ServiceProvider module.

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

정답: D,E

설명: (DumpTOP 회원만 볼 수 있음)

문제9

Given:

What needs to change to make these classes compile and still handle all types of Interface Worker?

A. Replace Line 2 with private List processes = new ArrayList<>();.

B. Replace Line 3 with public void addProcess(T w) {.

C. Replace Line 1 with public class Main extends Thread {.

D. Replace Line 3 with public void addProcess (Worker w) {.

정답: B

문제10

Given:

Which is true?

A. The compilation succeeds.

B. The compilation fails due to an error in line 9.

C. The compilation fails due to an error in line 10.

D. The compilation fails due to an error in line 6.

E. The compilation fails due to an error in line 4.

F. The compilation fails due to an error in line 7.

G. The compilation fails due to an error in line 2.

정답: D

문제11

Given:
LocalDate d1 = LocalDate.of(1997,2,7);
DateTimeFormatter dtf =
DateTimeFormatter.ofPattern( /*insert code here*/ );
System.out.println(dtf.format (d1));
Which pattern formats the date as Friday 7th of February 1997?

A. "eeee d'th of' MMMM yyyy"

B. "eeee dd+"th of"+ MMM yyyy"

C. "eeee d+"th of"+ MMMM yyyy"

D. "eeee dd'th of' MMM yyyy"

정답: A

문제12

Given the declaration:

In which two locations is it legal to apply the @Resource annotation?

A. Loc3

B. Loc1

C. Loc2

D. Loc2

E. Loc4

정답: A,C

문제13

Given:

Which two are secure serialization of these objects? (Choose two.)

A. Declare fields transient.

B. Implement only readResolve to replace the instance with a serial proxy and not writeReplace.

C. Implement only writeReplace to replace the instance with a serial proxy and not readResolve.

D. Make the class abstract.

E. Define the serialPersistentFields array field.

정답: B,E

문제14

Given the code fragment:
Which two code snippets inserted independently inside print method print Mondial: domainmodal?

A. Main.prefix + Main.getName()

B. Main.prefix + Main.name

C. new Main (} .prefix + new Main().name

D. prefix + Main, name

E. prefix + getName

F. prefix + name

정답: C,D

문제15

Given:

What is the result?

A. A java.util.NoSuchElementException is thrown at run time.

B. The compilation fails.

C. Ans :

D. Ans : a

정답: A

문제16

Given:

Which two constructors will compile and set the class field strings? (Choose two.)

A. Option E

B. Option D

C. Option C

D. Option B

E. Option A

정답: A,C

문제17

Which code fragment compiles?

A. Option D

B. Option C

C. Option B

D. Option A

정답: A

설명: (DumpTOP 회원만 볼 수 있음)

최신 1Z0-819 무료덤프 - Oracle Java SE 11 Developer

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