1Z0-819 PDF Dumps Apr 13, 2023 Exam Questions – Valid 1Z0-819 Dumps [Q110-Q130]

1Z0-819 PDF Dumps Apr 13, 2023 Exam Questions – Valid 1Z0-819 Dumps

Ultimate 1Z0-819 Guide to Prepare Free Latest Oracle Practice Tests Dumps

Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819

The following will be discussed in the ORACLE 1Z0-006 exam dumps:

• Understand variable scopes, apply encapsulation and make objects immutable
• Create and use enumerations
• Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
• Define and use fields and methods, including instance, static and overloaded methods
• Declare and instantiate Java objects including nested class objects, and explain objects’ – lifecycles (including creation, dereferencing by reassignment, and garbage collection)

What is Java SE 11 Developer Exam Number: 1Z0-819 Certification Exam and Retake policy

Oracle Cloud Certification credentials are only valid for a period of 18 months from the date you earn the credential. The certification will become inactive at the end of 18 months. However, for Oracle candidates, it is necessary to hold an active certification in order to have access to various certification benefits including, using Oracle certification logos, certificates, scoring reports, digital badges, and certification verification.

To stay current, candidates have to re-certify themselves with the latest version of the exam. Oracle Cloud Certifications include various titles with levels that are Oracle Certified Associate, Specialist, and Professional. Moreover, the Oracle Cloud Certifications are updated continuously throughout the year for keeping current with major product and service releases and re-released on an annual basis with a new title.

QUESTION 110
Given the Customer table structure:
* ID Number Primary Key
* NAME Text Nullable
Given code fragment:

Which statement inserted on line 14 sets NAME column to a NULL value?

 Stmt.setNull(2, java,sql. Types, VARCHAR);

 Stmt.setNull(2 string, class);

 Stmt.setNull(2, null);

 Stmt.setNull(2, java.lang, string);

QUESTION 111
Given these two classes:


And given this fragment:

Which describes the fragment?

 It throws IllegalMonitorStateException.

 It is subject to deadlock.

 It is subject to livelock.

 The code does not compile.

QUESTION 112
Given:

Which two changes need to be made to make this class compile? (Choose two.)

 Change Line 1 to an abstract class:public abstract class API {

 Change Line 2 access modifier to protected:protected void checkValue(Object value)throws IllegalArgumentException;

 Change Line 1 to a class:public class API {

 Change Line 1 to extend java.lang.AutoCloseable:public interface API extends AutoCloseable {

 Change Line 2 to an abstract method:public abstract void checkValue(Object value)throws IllegalArgumentException;

QUESTION 113
Given:

What is the result?

 An indexOutofBoundsException is thrown at runtime.

 At once 0

 Hat at store 4

 At once 1

 Hat at store 1

QUESTION 114
Given the code fragment:

What is the result?

 -1 : 2

 2 : -1

 2 : 3

 3 : 0

QUESTION 115
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 116
Which two describe reasons to modularize the JDK? (Choose two.)

 easier to understand the Java language

 improves security and maintainability

 easier to expose implementation details

 improves application robustness

 easier to build a custom runtime linking application modules and JDK modules

QUESTION 117
Given:

Which annotation should be used to remove warnings from compilation?

 @SuppressWarnings on the main and print methods

 @SuppressWarnings(“unchecked”) on main and @SafeVarargs on the print method

 @SuppressWarnings(“rawtypes”) on main and @SafeVarargs on the print method

 @SuppressWarnings(“all”) on the main and print methods

QUESTION 118
Given:

What is the type of x?

 char

 List<Character>

 String

 List<String>

QUESTION 119
Given:

What is the output?

 300

 Exception

 200

 100

QUESTION 120
Given:

What is the result?

 Dr. Who

 Dr. Null

 An exception is thrown at runtime.

 null

QUESTION 121
Given:

What is the result?

 Map: 0 Keys: 0 Values: 0

 The compilation fails.

 Map: 4 Keys: 4 Values: 4

 Map: 4 Keys: 0 Values: 0

 Map: 0 Keys: 4 Values: 4

QUESTION 122
Given:

What is the result?

 Good Morning, Potter

 Good Night, Potter

 Good Morning, Harry

 Good Night, Harry

QUESTION 123
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.

Reference:
/validating-input-using-java-util-scanner

QUESTION 124
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 125
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 126
Given:

Which one is correct?

 An IllegalThreadStateException is thrown at run time.

 Three threads are created.

 The compilation fails.

 Four threads are created.

QUESTION 127
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 128
Given the code fragment:
Path source = Paths.get(“/repo/a/a.txt”);
Path destination = Paths.get(“/repo”);
Files.move(source, destination); // line 1
Files.delete (source); // line 2
Assuming the source file and destination folder exist, what Is the result?

 A java.nio.file.FileAlreadyExistsException is thrown on line 1.

 A java.nio.file.NoSuchFileException is thrown on line 2.

 A copy of /repo/a/a.txt is moved to the /repo directory and /repo/a/a.txt is deleted.

 a.txt is renamed repo.

QUESTION 129
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 130
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

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How much Java SE 11 Developer Exam Number: 1Z0-819 costs

• Examination Fees: $250 USD
• Length of Exam: 85 min
• No. of Questions: 60 Questions
• Types of questions: Performance Based Questions
• Examination Name: Java SE 11 Developer Exam Number: 1Z0-819

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