[2025] Pass Oracle 1z1-819 Test Practice Test Questions Exam Dumps [Q176-Q200]

Rate this post

[2025] Pass Oracle 1z1-819 Test Practice Test Questions Exam Dumps

Verified 1z1-819 dumps Q&As – 1z1-819 dumps with Correct Answers

To prepare for the Oracle 1Z0-819 exam, you can take advantage of a variety of resources, including official Oracle study materials, online courses, practice exams, and study groups. You can also gain practical experience by working on Java projects or contributing to open-source Java projects. By investing time and effort in preparing for the exam, you can increase your chances of passing the exam and earning the Oracle Certified Professional (OCP) credential in Java SE 11 Developer.

NEW QUESTION 176
Given:

What is the result?

An exception is thrown at runtime.

NEW QUESTION 177
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

NEW QUESTION 178
Given the code fragment:

What is the result?

123

NEW QUESTION 179
Which two statements are true about Java modules? (Choose two.)

Modular jars loaded from –module-path are automatic modules.

Any named module can directly access all classes in an automatic module.

Classes found in -classpath are part of an unnamed module.

Modular jars loaded from -classpath are automatic modules.

If a package is defined in both the named module and the unnamed module, then the package in the unnamed module is ignored.

NEW QUESTION 180
Given the code fragment:

Which action enables Computatorclass to compile?

change Line 1 to add throws NumberFormatException

change Line 3 to Double sum = 0.0;

change Line 5 to List<Double> numbers = List.of(5, 4, 6, 3, 7, 2, 8, 1, 9);

change Line 2 to public Double sum ( C collection) {

change Line 4 to for (Double n : collection) {

NEW QUESTION 181
Given:

What is the result?

The compilation fails at line 9.

The compilation fails at line 2.

Hello World

The compilation fails at line 8.

NEW QUESTION 182
Given:

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

@Override // position 3void x () {} // position 3@Override // position 3public void z() { } // position 3

@Override // position 2public void z() { } // position 3

implements A // position 1@Override // position 2

public void z() { } // position 3

NEW QUESTION 183
Which two safely validate inputs? (Choose two.)

Delegate numeric range checking of values to the database.

Accept only valid characters and input values.

Use trusted domain-specific libraries to validate inputs.

Assume inputs have already been validated.

Modify the input values, as needed, to pass validation.

NEW QUESTION 184
Given the code fragment:

Which “for” loop produces the same output?

Option A

Option B

Option C

Option D

NEW QUESTION 185
Given the code fragment:
Which two code snippets inserted independently inside println method print Mondial:domainmodel? (Choose two.)

Main.prefix + Main.name

prefix + getName

Main.prefix + Main.getName()

new Main().prefix + new Main().name

prefix + name

prefix + Main.name

NEW QUESTION 186
Given:

You want to obtain the Filechannel object on line 1.
Which code fragment will accomplish this?

NEW QUESTION 187
Given:

Which code fragment on line 1 makes the m map contain the employee with the highest salary for each neighborhood?
A)

B)

C)

D)

Option A

Option B

Option C

Option D

NEW QUESTION 188
Given:

Which two constructors will compile and set the class field strings? (Choose two.)

Option A

Option B

Option C

Option D

Option E

NEW QUESTION 189
Given:

It is required that if p instanceof Pair then p.isValid() returns true.
Which is the smallest set of visibility changes to insure this requirement is met?

setLeft and setRight must be protected.

left and right must be private.

isValid must be public.

left, right, setLeft, and setRight must be private.

NEW QUESTION 190
Given:

What is the type of x?

char

List<Character>

String

List<String>

NEW QUESTION 191
Given:

What is the result?

The compilation fails.

1.99,2.99,0

1.99,2.99,0.0

1.99,2.99

NEW QUESTION 192
Given:

You want to examine the items list it contains an item for which the variable count is below zero.
Which code fragment at line 1 accomplish this?

If (items.stream () .filter (i -> count < 0) . findFirst () ) {

If (items.stream () .filter (i -> count < 0) . findAny () ) {

If (items.stream () .allmatch (i -> count < 0) < 0) ) {

If (items.stream () .anymatch (i -> count < 0) < 0) ) {

NEW QUESTION 193
Given:

You want to implement the jav
a. Io, serializable interface to the MypersisteneData class.
Which method should be overriden?