Top Tips Of Avant-garde 1Z0-819 Exam Engine

NEW QUESTION 1
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 placement of the com.example.api API in a separate module, ServiceAPI, makes it easy to install multiple provider modules.
• C. The Consumer module should require the ServiceProvider module.
• D. The ServiceProvider module should export the com.myimpl package.
• E. The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the com.example.api API.

Answer: AC

NEW QUESTION 2
Given:

After which line can we insert assert i < 0 || values[i] <= values[i + 1]; to verify that the values array is partially sorted?

• A. after line 8
• B. after line 6
• C. after line 5
• D. after line 10

Answer: B

Explanation:

NEW QUESTION 3
Given:

When run and all three files exist, what is the state of each reader on Line 1?

• A. All three readers are still open.
• B. All three readers have been closed.
• C. The compilation fails.
• D. Only reader1 has been closed.

Answer: C

NEW QUESTION 4
Given:
List<String> list1 = new ArrayList<>(); list1.add(“A”);
list1.add(“B”);
List list2 = List.copyOf(list1); list2.add(“C”);
List<List<String>> list3 = List.of(list1, list2); System.out.println(list3);
What is the result?

• A. [[A, B],[A, B]]
• B. An exception is thrown at run tim
• C. [[A, B], [A, B, C]]
• D. [[A, B, C], [A, B, C]]

Answer: B

Explanation:

NEW QUESTION 5
Given:

What is the result?

• A. 3 5 3 3
• B. 3 3 3 3
• C. 3 5 3 5
• D. 5 5 3 3

Answer: A

Explanation:

NEW QUESTION 6
Given:

And the command: java Main Helloworld What is the result ?

• A. Input: Echo:
• B. Input: Helloworld Echo: Helloworld
• C. Input:Then block until any input comes from System.in.
• D. Input:Echo: Helloworld
• E. A NullPointerException is thrown at run time.

Answer: C

Explanation:

NEW QUESTION 7
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(Locale.Category.FORMAT, Locale.CANADA_FRENCH);
• C. Locale.setDefault(Locale.SIMPLIFIED_CHINESE);
• D. Locale.setDefault(“en_CA”);
• E. Locale.setDefault(“es”, Locale.US);

Answer: BD

NEW QUESTION 8
Given:

Which loop incurs a compile time error?

• A. the loop starting line 11
• B. the loop starting line 7
• C. the loop starting line 14
• D. the loop starting line 3

Answer: C

NEW QUESTION 9
Given:

Which option should you choose to enable the code to print Something happened?

• A. Add extends GeneralException on line 1.Add extends Exception on line 2.
• B. Add extends SpecificException on line 1.Add extends GeneralException on line 2.
• C. Add extends Exception on line 1.Add extends Exception on line 2.
• D. Add extends Exception on line 1.Add extends GeneralException on line 2.

Answer: D

Explanation:

NEW QUESTION 10
Given the code fragment:

What is the result?

• A. -1 : 2
• B. 2 : -1
• C. 2 : 3
• D. 3 : 0

Answer: B

NEW QUESTION 11
Given:

Assume the file on path does not exist. What is the result?

• A. The compilation fails.
• B. /u01/work/filestore.txt is not deleted.
• C. Exception
• D. /u01/work/filestore.txt is deleted.

Answer: A

Explanation:

NEW QUESTION 12
Given the code fragment:

What is the result?

• A. 01
• B. 1
• C. The program prints nothing.
• D. It prints 1 in the infinite loop.

Answer: D

NEW QUESTION 13
Which code fragment does a service use to load the service provider with a Print interface?

• A. private Print print = com.service.Provider.getInstance();
• B. private java.util.ServiceLoader<Print> loader = ServiceLoader.load (Print.class);
• C. private java.util.ServiceLoader<Print> loader = new java.util.ServiceLoader<> ();
• D. private Print print = new com.service.Provider.PrintImpl();

Answer: B

NEW QUESTION 14
Consider this method declaration:

A) “SET SESSION AUTHORIZATION “ + user
B) “SET SESSION AUTHORIZATION “ + stmt.enquoteIdentifier(user) Is A or B the correct replacement for <EXPRESSION> and why?

• A. A, because it sends exactly the value of user provided by the calling code.
• B. B, because enquoting values provided by the calling code prevents SQL injection.
• C. A and B are functionally equivalent.
• D. A, because it is unnecessary to enclose identifiers in quotes.
• E. B, because all values provided by the calling code should be enquoted.

Answer: A

NEW QUESTION 15
Which two statements are correct about try blocks? (Choose two.)

• A. A try block can have more than one catch block.
• B. A finally block in a try-with-resources statement executes before the resources declared are closed.
• C. A finally block must be immediately placed after the try or catch blocks.
• D. A try block must have a catch block and a finally block.
• E. catch blocks must be ordered from generic to specific exception types.

Answer: AC

NEW QUESTION 16
Given:

What is the result?

• A. It throws a runtime exception.
• B. Value of Euler = 2.71828
• C. The code does not compile.
• D. Value of Euler = “2.71828”

Answer: C

NEW QUESTION 17
Given:

What is the result?

• A. A ClassCastException is thrown at runtime.
• B. AnotherClass#methodA()AnotherClass#methodA()
• C. The compilation fails.
• D. SomeClass#methodA()AnotherClass#methodA()
• E. AnotherClass#methodA()SomeClass#methodA()
• F. SomeClass#methodA()SomeClass#methodA()

Answer: C

Explanation:

NEW QUESTION 18
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