Verified 1Z0-819 dumps Q&As – 100% Pass from ExamsTorrent [Q79-Q99]

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Verified 1Z0-819 dumps Q&As – 100% Pass from ExamsTorrent

Pass 1Z0-819 Exam in First Attempt Guaranteed 2023 Dumps!

QUESTION 79
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

QUESTION 80
Given:

What is required to make the Foo class thread safe?

No change is required.

Make the declaration of lock static.

Replace the lock constructor call with new ReentrantLock (true).

Move the declaration of lock inside the foo method.

QUESTION 81
Given:

What is the output?

A compilation error is thrown.

Message from Copier: Attempt00

Message from Abstract Copier: Attempt00

A runtime error is thrown.

QUESTION 82
Why does this compilation fail?

The method Y. print (object) does not call the method super.print (object)

The method x. print (object) is not accessible to Y.

In method x. print (Collection), system. Out :: prints is an invalid Java identifier.

The method print (object) and the method print (object…) are duplicates of each other.

The method Y. print (object…) cannot override the final method x.print (object….).

QUESTION 83
Given:

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

after line 8

after line 6

after line 5

after line 10

QUESTION 84
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.

QUESTION 85
Given:

What is the result?

[0,0] = Red[0,1] = White[1,0] = Black[1,1] = Blue[2,0] = Yellow[2,1] = Green[3,0] = Violet

[0,0] = Red[1,0] = Black[2,0] = Blue

java.lang.ArrayIndexOutOfBoundsException thrown

[0,0] = Red[0,1] = White[1,0] = Black[2,0] = Blue[2,1] = Yellow[2,2] = Green[2,3] = Violet

QUESTION 86
Which code fragment prints 100 random numbers?

Option A

Option B

Option C

Option D

QUESTION 87
Given this enum declaration:

Examine this code:
System.out.println(Letter.values()[1]);
What code should be written at line 5 for this code to print 200?

public String toString() { return String.valueOf(ALPHA.v); }

public String toString() { return String.valueOf(Letter.values()[1]); }

public String toString() { return String.valueOf(v); }

String toString() { return “200”; }

QUESTION 88
Which method throws an exception for not-a-number and infinite input values?
A)

B)

C)

D)

Option A

Option B

Option C

Option D

QUESTION 89
Given:

What is the output?

A compilation error is thrown.

Message from Copier: Attempt00

Message from Abstract Copier: Attempt00

A runtime error is thrown.

QUESTION 90
Given:

What is the result?
2-4

0-6

1-5
2-4
1-5

1-5

2-4

The compilation fails due to an error in line 1.
0-6

0-6

2-4

QUESTION 91
Given:

Which three classes successfully override showFirst ()?
A)

B)

C)

D)

E)

F)

Option A

Option B

Option C

Option D

Option E

Option F

QUESTION 92
Given this enum declaration:

Examine this code:
System.out.println(Alphabet.getFirstLetter());
What code should be written at line 3 to make this code print A?

final String getFirstLetter() { return A.toString(); }

static String getFirstLetter() { return Alphabet.values()[1].toString(); }

static String getFirstLetter() { return A.toString(); }

String getFirstLetter() { return A.toString(); }

QUESTION 93
Given:

Which statement is equivalent to line 1?

double totalSalary = list.stream().map(e > e.getSalary() * ratio).reduce (bo).ifPresent (p > p.doubleValue());

double totalSalary = list.stream().mapToDouble(e > e.getSalary() * ratio).sum;

double totalSalary = list.stream().map(Employee::getSalary * ratio).reduce (bo).orElse(0.0);

double totalSalary = list.stream().mapToDouble(e > e.getSalary() * ratio).reduce(starts, bo);

QUESTION 94
Given:

What is the result?

NullPointerException is thrown at line 4.

NullPointerException is thrown at line 10.

A compilation error occurs.

Hello

QUESTION 95
Given:

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

float z = (float)(Math.round((float)x/y*100)/100);

float z = Math.round((int)(x/y),2);

float z = Math.round((float)x/y,2);

float z = Math.round((float)x/y*100)/(float)100;

QUESTION 96
Which describes a characteristic of setting up the Java development environment?

Setting up the Java development environment requires that you also install the JRE.

Setting up the Java development environment occurs when you install an IDE before the JDK.

The Java development environment is set up for all operating systems by default.

You set up the Java development environment for a specific operating system when you install the JDK.

QUESTION 97
Given the code fragment:
public void foo(Function<Integer, String> fun) {…}
Which two compile? (Choose two.)

foo( n -> Integer.toHexString(n) )

foo( toHexString )

foo( n -> n + 1 )

foo( int n -> Integer.toHexString(n) )

foo( n -> Integer::toHexString )

foo( Integer::toHexString )

foo( n::toHexString )

foo( (int n) -> Integer.toHexString(n) )

Explanation/Reference:

QUESTION 98
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();

QUESTION 99
Given:

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

Add extends GeneralException on line 1.
Add extends Exception on line 2.

Add extends SpecificException on line 1.
Add extends GeneralException on line 2.

Add extends Exception on line 1.
Add extends Exception on line 2.

Add extends Exception on line 1.
Add extends GeneralException on line 2.

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The 1Z0-819 exam covers a wide range of Java SE 11 topics, including Java classes, interfaces, and objects, Java data types, Java collections, Java streams, Java IO and NIO, Java concurrency, Java annotations, Java generics, and Java exceptions. The exam also covers Java development tools, such as Java Development Kit (JDK), Java Integrated Development Environment (IDE), and Java Virtual Machine (JVM).

1Z0-819 Dumps Full Questions – Exam Study Guide: https://www.examstorrent.com/1Z0-819-exam-dumps-torrent.html