Based on Official Syllabus Topics of Actual Oracle 1z1-819 Exam [Q91-Q112] : Exams Labs Braindumps : http://blog.examslabs.com

Q91. Given:

What is the result?

[A, B, C]
followed by an exception thrown on line 11.

[A, B, C]
[A, B]

[A, B, C]
[A, B, C]

On line 9, an exception is thrown at run time.

Q92. Given the code fragment:
var pool = Executors.newFixedThreadPool(5);
Future outcome = pool.submit(() > 1);
Which type of lambda expression is passed into submit()?

java.lang.Runnable

java.util.function.Predicate

java.util.function.Function

java.util.concurrent.Callable

Q93. Given:

Which three are correct? (Choose three.)

b1.foo(li) prints Hello world!

f1.foo(li) prints Bonjour le monde!

f1.foo(li) prints Hello world!

f1.foo(li) prints Hola Mundo!

b1.foo(li) prints Bonjour le monde!

f2.foo(li) prints Hola Mundo!

f2.foo(li) prints Bonjour le monde!

b1.foo(li) prints Hola Mundo!

f2.foo(li) prints Hello world!

Q94. Given:

Which two lines inserted in line 1 will allow this code to compile? (Choose two.)

protected void walk(){}

void walk(){}

abstract void walk();

private void walk(){}

public abstract void walk();

Q95. Which two interfaces are considered to be functional interfaces? (Choose two.)
@FunctionalInterface

interface InterfaceC {
public boolean equals(Object o);
int breed(int x);
int calculate(int x, int y);
}
@FunctionalInterface

interface InterfaceD {
int breed(int x);
}
@FunctionalInterface

interface InterfaceE {
public boolean equals(int i);
int breed(int x);
}
interface InterfaceA {

int GERM = 13;
public default int getGERM() { return GERM; }
}
interface InterfaceB {

int GERM = 13;
public default int getGERM() { return get(); }
private int get() { return GERM; }
public boolean equals(Object o);
int breed(int x);
}

Q96. Given:

Why does D cause a compilation error?

D inherits a() only from C.

D inherits a() from B and C but the return types are incompatible.

D extends more than one interface.

D does not define any method.

Q97. Given the code fragment:

What is the result?

A java.lang, UnsupportedOperationException is thrown.

True

False

A java.lang.NullPointerException is thrown.

Q98. Given:

executed with this command:
java Main one two three
What is the result?

0). one

0). one1). two2). three

The compilation fails.

It creates an infinite loop printing:0). one1). two1). two…

A java.lang.NullPointerException is thrown.

Q99. 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)

Option A

Option B

Option C

Option D

Q100. Assume ds is a DataSource and the EMP table is defined appropriately.

What does executing this code fragment do?

inserts two rows (101, ‘SMITH’, ‘HR’) and (102, ‘JONES’, NULL)

inserts two rows (101, ‘SMITH’, ‘HR’) and (102, ‘JONES’, ‘HR’)

inserts one row (101, ‘SMITH’, ‘HR’)

throws a SQLException

Q101. Given:

What is the result?

JoeMarry

Joenull

nullnull

nullMary

Q102. Given the content:

What Is the result?
A)

B)

C)

D)

E)
User Username

Option A

Option B

Option C

Option D

Option

Q103. Given:

Which two are correct? (Choose two.)

Option A

Option B

Option C

Option D

Q104. Given:

What is the output?

:APPLE:ORANGE:BANANA
appleorangebanana

:APPLE:ORANGE:BANANA

APPLE:apple ORANGE:orange BANANA:banana

appleorangebanana
:APPLE:ORANGE:BANANA

apple:APPLE orange:ORANGE banana:BANANA

Q105. Given the code fragment:

What is the result?

ab cd ef

An ArrayIndexOutOfBoundsException is thrown at runtime.

The compilation fails.

abc def

ad be cf

Q106. Given:
Automobile.java

Car.java

What must you do so that the code prints 4?

Remove the parameter from wheels method in line 3.

Add @Override annotation in line 2.

Replace the code in line 2 with Car ob = new Car();

Remove abstract keyword in line 1.

Q107. Given the code fragment:
Path currentFile = Paths.get(“/scratch/exam/temp.txt”);
Path outputFile = Paths get(“/scratch/exam/new.txt”);
Path directory = Paths.get(“/scratch/”);
Files.copy(currentFile, outputFile);
Files.copy(outputFile, directory);
Files.delete (outputFile);
The /scratch/exam/temp.txt file exists. The /scratch/exam/new.txt and /scratch/new.txt files do not exist.
What is the result?

/scratch/exam/new.txt and /scratch/new.txt are deleted.

The program throws a FileaAlreadyExistsException.

The program throws a NoSuchFileException.

A copy of /scratch/exam/new.txt exists in the /scratch directory and /scratch/exam/new.txt is deleted.

Q108. Given:

You want to use the myResource class in a try-with-resources statement. Which change will accomplish this?

Extend AutoCloseable and override the close method.

Implement AutoCloseable and override the autoClose method.

Extend AutoCloseable and override the autoClose method.

Implement AutoCloseable and override the close method.

Q109. Given:
public class X {
}
and
public final class Y extends X {
}
What is the result of compiling these two classes?

The compilation fails because there is no zero args constructor defined in class X.

The compilation fails because either class X or class Y needs to implement the toString() method.

The compilation fails because a final class cannot extend another class.

The compilation succeeds.

Q110. Which two are successful examples of autoboxing? (Choose two.)

String a = “A”;

Integer e = 5;

Float g = Float.valueOf(null);

Double d = 4;

Long c = 23L;

Float f = 6.0;

Q111. 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”?

Option A

Option B

Option C

Option D

Q112. Given:
Automobile.java

Car.java

What must you do so that the code prints 4?

Remove the parameter from wheels method in line 3.

Add @Override annotation in line 2.

Replace the code in line 2 with Car ob = new Car();

Remove abstract keyword in line 1.