What Virtual 1Z0-819 Exam Is

NEW QUESTION 1
Given:

Which statement is true about the Fox class?

• A. Fox class does not have to override inhabit method, so long as it does not try to call it.
• B. Fox class does not have to override the inhabit method if Forest and Town provide compatible implementations.
• C. Fox class must implement either Forest or Town interfaces, but not both.
• D. The inhabit method implementation from the first interface that Fox implements will take precedence.
• E. Fox class must provide implementation for the inhabit method.

Answer: B

NEW QUESTION 2
Given:

Which two methods modify field values? (Choose two.)

• A. setAllCounts
• B. setACount
• C. setGCount
• D. setCCount
• E. setTCount

Answer: AC

NEW QUESTION 3
Given:

What is the result?

• A. NullPointerException is thrown at line 4.
• B. NullPointerException is thrown at line 10.
• C. A compilation error occurs.
• D. Hello

Answer: D

Explanation:

NEW QUESTION 4
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 5
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. String result = fruits.stream().filter(f > f.contains(“n”)).findAny();
• B. fruits.stream().filter(f > f.contains(“n”)).forEachOrdered(System.out::print);
• C. Optional<String> result = fruits.stream().filter(f > f.contains (“n”)).findFirst ();
• D. Optional<String> result = fruits.stream().anyMatch(f > f.contains(“n”));

Answer: B

Explanation:

NEW QUESTION 6
Given:

Which code, when inserted at one or more marked positions, would allow classes B and C to compile?

• A. @Override // position 3void x () {} // position 3@Override // position 3public void z() { } // position 3
• B. @Override // position 2public void z() { } // position 3
• C. implements A // position 1@Override // position 2
• D. public void z() { } // position 3

Answer: B

NEW QUESTION 7
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 8
Which two modules include APIs in the Java SE Specification? (Choose two.)

• A. java.logging
• B. java.desktop
• C. javafx
• D. jdk.httpserver
• E. jdk.jartool

Answer: AD

NEW QUESTION 9
Given:

Which two statements are true if the method is added to Bar? (Choose two.)

• A. public Collection<String> foo(Collection<String> arg) { ... } overrides Foo.foo.
• B. public <T> Collection<T> foo(Stream<T> arg) { ... } overloads Foo.foo.
• C. public <T> List<T> foo(Collection<T> arg) { ... } overrides Foo.foo.
• D. public <T> Collection<T> foo(Collection<T> arg) { ... } overloads Foo.foo.
• E. public <T> Collection<T> bar(Collection<T> arg) { ... } overloads Foo.foo.
• F. public <T> Iterable<T> foo(Collection<T> arg) { ... } overrides Foo.foo.

Answer: CF

NEW QUESTION 10
Given:

What is the result?

• A. An exception is thrown at runtim
• B. 42=(x+y)=42
• C. 42=(x+y)=6
• D. 6=(x+y)=42
• E. 6=(x+y)=6

Answer: D

Explanation:

NEW QUESTION 11
Which set of commands is necessary to create and run a custom runtime image from Java source files?

• A. java, jdeps
• B. javac, jlink
• C. jar, jlink
• D. javac, jar

Answer: B

NEW QUESTION 12
Given:

What is the result?

• A. 9
• B. An exception is thrown at runtime.
• C. 3
• D. 6

Answer: D

Explanation:

NEW QUESTION 13
Given:

Which annotation should be used to remove warnings from compilation?

• A. @SuppressWarnings on the main and print methods
• B. @SuppressWarnings(“unchecked”) on main and @SafeVarargs on the print method
• C. @SuppressWarnings(“rawtypes”) on main and @SafeVarargs on the print method
• D. @SuppressWarnings(“all”) on the main and print methods

Answer: B

Explanation:

NEW QUESTION 14
Given:

What is the result?

• A. is it 1
• B. An IndexOutOfBoundsException is thrown at runtime.
• C. is it 0
• D. this is it 2
• E. this is it 3

Answer: D

Explanation:

NEW QUESTION 15
Which two commands are used to identify class and module dependencies? (Choose two.)

• A. jmod describe
• B. java Hello.java
• C. jdeps --list-deps
• D. jar --show-module-resolution
• E. java --show-module-resolution

Answer: CE

NEW QUESTION 16
Given:

What is the output?

• A. I am an object array
• B. The compilation fails due to an error in line 1.
• C. I am an array
• D. I am an object

Answer: D

NEW QUESTION 17
What makes Java dynamic?

• A. At runtime, classes are loaded as needed, and new code modules can be loaded on demand.
• B. The runtime can process machine language sources as well as executables from different language compilers.
• C. The Java compiler uses reflection to test if class methods are supported by resources of a target platform.
• D. The Java compiler preprocesses classes to run on specific target platforms.

Answer: A

NEW QUESTION 18
Which three initialization statements are correct? (Choose three.)

• A. int x = 12_34;
• B. short sh = (short)‘A’;
• C. String contact# = “(+2) (999) (232)”;
• D. boolean true = (4 == 4);
• E. float x = 1.99;
• F. int[][] e = {{1,1},{2,2}};
• G. byte b = 10;char c = b;

Answer: ABF

NEW QUESTION 19
A company has an existing sales application using a Java 8 jar file containing packages: com.company.customer;
com.company.customer.orders; com.company.customer.info; com.company.sales;
com.company.sales.leads; com.company.sales.closed; com.company.orders; com.company.orders.pending; com.company.orders.shipped.
To modularize this jar file into three modules, customer, sales, and orders, which module-info.java would be correct?
A)

B)

C)

D)

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: C

NEW QUESTION 20
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