1Z0-819 Study Guide Latest [Sep 23, 2024] Realistic Verified 1Z0-819 Dumps [Q145-Q168]

5/5 - (1 vote)

1Z0-819 Study Guide: Latest [Sep 23, 2024] Realistic Verified 1Z0-819 Dumps

1Z0-819 Questions & Practice Test are Available On-Demand

Oracle 1Z0-819 (Java SE 11 Developer) exam is a certification exam designed for Java developers who want to demonstrate their expertise in Java programming. 1Z0-819 exam is a part of the Oracle Certified Professional (OCP) program, which is recognized worldwide as a standard for measuring Java proficiency. Passing the Oracle 1Z0-819 exam is a great way to showcase your knowledge and skills in Java programming and enhance your career prospects.

NO.145 Given:

What is the result?

2134

234

2341

214

NO.146 Given:

Which two interfaces can be used in lambda expressions? (Choose two.)

MyInterface1

MyInterface3

MyInterface5

MyInterface2

MyInterface4

NO.147 Given:

Which two are correct? (Choose two.)

Option A

Option B

Option C

Option D

NO.148 Given the code fragment:

What is the result?

A java.lang, UnsupportedOperationException is thrown.

True

False

A java.lang.NullPointerException is thrown.

NO.149 Given:
jdeps -jdkinternals C:workspace4SimpleSecurityjarclasses.jar
Which describes the expected output?

jdeps lists the module dependencies and the package names of all referenced JDK internal APIs. If any are found, the suggested replacements are output in the console.

jdeps outputs an error message that the -jdkinternals option requires either the -summary or the – verbose options to output to the console.

The -jdkinternals option analyzes all classes in the .jar and prints all class-level dependencies.

The -jdkinternals option analyzes all classes in the .jar for class-level dependencies on JDK internal APIs. If any are found, the results with suggested replacements are output in the console.

-jdkinternals option analyzes all classes in the .jar for class-level dependencies on JDK internal APIs. If any are found, the results with suggested replacements are output in the console.

NO.150 Given:
var data = new ArrayList<>();
data.add(“Peter”);
data.add(30);
data.add(“Market Road”);
data.set(1, 25);
data.remove(2);
data.set(3, 1000L);
System.out.print(data);
What is the output?

[Market Road, 1000]

[Peter, 30, Market Road]

[Peter, 25, null, 1000]

An exception is thrown at run time.

NO.151 Given:

executed using this command:
java Myclass My Car is red
What is the output of this class?

Car–red–My

My–Car–is

My–is–java

java–Myclass–My

Myclass–Car–red

NO.152 Which three initialization statements are correct? (Choose three.)

int[][][] e = {{1,1,1},{2,2,2}};

short sh = (short)’A’;

float x = 1f;

byte b = 10;
char c = b;

String contact# = “(+2) (999) (232)”;

int x = 12_34;

boolean false = (4 != 4);

NO.153 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

NO.154 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.

NO.155 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.

Reference:
/how-to-make-java-class-thread-safe

NO.156 Given:

What is the result?

The compilation fails.

abdf

abd

adf

abcd

NO.157 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

NO.158 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;

NO.159 Given the directory structure:

What is the result?

NO.160 Analyze the code:

Which two options can you insert inside println method to produce Global:namescope? (Choose two.)

Test.prefix+Test.name

new Test().prefix+new Test().name

Test.prefix+Test.getName()

Test.getName+prefix

prefix+Test.name

prefix+name

NO.161 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

NO.162 Given the Person class with age and name along with getter and setter methods, and this code fragment:

What will be the result?

Aman Tom Peter

Tom Aman Peter

Aman Peter Tom

Tom Peter Aman

NO.163 Given the code fragment:

What is the result?

EUR -> 0.84
GBP -> 0.75
USD -> 1.00
CNY -> 6.42

The compilation fails.

CNY -> 6.42
EUR -> 0.84
GBP -> 0.75
USD -> 1.00

USD -> 1.00
GBP -> 0.75
EUR -> 0.84
CNY -> 6.42

NO.164 Given the code fragment:

What should be inserted at line n1 so that the code fragment prints Name is required?

name.trim() == ” ”

name, isBlanl ()

name. compareTo(” ”) == 0

name.isEmpty

NO.165 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;

NO.166 Which interface in the java.util.function package will return a void return type?

Supplier

Predicate

Function

Consumer

NO.167 Given:

What is the result?

An exception is thrown at runtime.

NO.168 Examine this excerpt from the declaration of the java.se module:

What does the transitive modifier mean?

Only a module that requires the java.se module is permitted to require the java.sql module.

Any module that requires the java.se module does not need to require the java.sql module.

Any module that attempts to require the java.se module actually requires the java.sql module instead.

Any module that requires the java.sql module does not need to require the java.se module.

Loading …

Valid 1Z0-819 Exam Dumps Ensure you a HIGH SCORE: https://www.testsimulate.com/1Z0-819-study-materials.html

Leave a Reply Cancel reply