Top Tips Of Replace 1Z0-819 Testing Material

NEW QUESTION 1
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 2
Which command line runs the main class com.acme.Main from the module com.example?

• A. java --module-path mods com.example/com.acme.Main
• B. java –classpath com.example.jar com.acme.Main
• C. java --module-path mods -m com.example/com.acme.Main
• D. java -classpath com.example.jar –m com.example/com.acme.Main

Answer: D

NEW QUESTION 3
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 4
Given:

Which expression when added at line 1 will produce the output of 1.17?

• A. float z = (float)(Math.round((float)x/y*100)/100);
• B. float z = Math.round((int)(x/y),2);
• C. float z = Math.round((float)x/y,2);
• D. float z = Math.round((float)x/y*100)/(float)100;

Answer: D

Explanation:

NEW QUESTION 5
Given:

What is the result?

• A. compilation error
• B. 0 5
• C. 6 13
• D. 5 12

Answer: A

Explanation:

NEW QUESTION 6
Which is the correct order of possible statements in the structure of a Java class file?

• A. class, package, import
• B. package, import, class
• C. import, package, class
• D. package, class, import
• E. import, class, package

Answer: B

NEW QUESTION 7
Given:
String originalPath = “data\\projects\\a-project\\..\\..\\another-project”; Path path = Paths.get(originalPath); System.out.print(path.normalize());
What is the result?

• A. data\another-project
• B. data\projects\a-project\another-project
• C. data\\projects\\a-project\\..\\..\\another-project
• D. data\projects\a-project\..\..\another-project

Answer: D

Explanation:

NEW QUESTION 8
Given:

executed using this command: java Myclass My Car is red What is the output of this class?

• A. Car--red--My
• B. My--Car--is
• C. My--is--java
• D. java--Myclass--My
• E. Myclass--Car--red

Answer: A

NEW QUESTION 9
Given:

What is the output?

• A. Hello world!Bonjour le monde!
• B. Hello world!Hello world!
• C. Bonjour le monde!Hello world!
• D. Bonjour le monde!Bonjour le monde!

Answer: C

Explanation:

NEW QUESTION 10
Which describes an aspect of Java that contributes to high performance?

• A. Java prioritizes garbage collection.
• B. Java has a library of built-in functions that can be used to enable pipeline burst execution.
• C. Java monitors and optimizes code that is frequently executed.
• D. Java automatically parallelizes code execution.

Answer: C

NEW QUESTION 11
Which two statements are correct about modules in Java? (Choose two.)

• A. java.base exports all of the Java platforms core packages.
• B. module-info.java can be placed in any folder inside module-path.
• C. A module must be declared in module-info.java file.
• D. module-info.java cannot be empty.
• E. By default, modules can access each other as long as they run in the same folder.

Answer: AC

NEW QUESTION 12
Given:
/code/a/Test.java containing:

and
/code/b/Best.java containing: package b;
public class Best { }
Which is the valid way to generate bytecode for all classes?

• A. java /code/a/Test.java
• B. javac –d /code /code/a/Test
• C. java /code/a/Test.java /code/b/Best.java
• D. java –cp /code a.Test
• E. javac –d /code /code/a/Test.java /code/b/Best.java
• F. javac –d /code /code/a/Test.java

Answer: E

NEW QUESTION 13
Given:

Assuming that this code compiles correctly, which three statements are true? (Choose three.)

• A. B cannot be abstract.
• B. B is a subtype of A.
• C. A cannot be abstract.
• D. A cannot be final.
• E. B cannot be final.
• F. A is a subtype of B.

Answer: ABD

NEW QUESTION 14
Given the code fragment:

What is the result?

• A. ab cd ef
• B. An ArrayIndexOutOfBoundsException is thrown at runtime.
• C. The compilation fails.
• D. abc def
• E. ad be cf

Answer: E

NEW QUESTION 15
Given:

What is the result?

• A. 2134
• B. 2143
• C. 214
• D. 234

Answer: C

Explanation:

NEW QUESTION 16
Given the Person class with age and name along with getter and setter methods, and this code fragment:

What will be the result?

• A. Aman Tom Peter
• B. Tom Aman Peter
• C. Aman Peter Tom
• D. Tom Peter Aman

Answer: C

NEW QUESTION 17
Given:

Which is true about line 1?

• A. If the value is not present, a NoSuchElementException is thrown at run time.
• B. It always executes the System.out::print statement.
• C. If the value is not present, a NullPointerException is thrown at run time.
• D. If the value is not present, nothing is done.

Answer: D

Explanation:

NEW QUESTION 18
Given:

Which three are correct? (Choose three.)

• A. b1.foo(li) prints Hello world!
• B. f1.foo(li) prints Bonjour le monde!
• C. f1.foo(li) prints Hello world!
• D. f1.foo(li) prints Hola Mundo!
• E. b1.foo(li) prints Bonjour le monde!
• F. f2.foo(li) prints Hola Mundo!
• G. f2.foo(li) prints Bonjour le monde!
• H. b1.foo(li) prints Hola Mundo!
• I. f2.foo(li) prints Hello world!

Answer: ABH

NEW QUESTION 19
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