Free Oracle 1Z0-819 Exam Questions

Become Oracle Certified with updated 1Z0-819 exam questions and correct answers

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Total 515 Questions | Updated On: Aug 09, 2025

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Question 1

Given:

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

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

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

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

D : public void z() { } // position 3

Answer: B

Question 2

Which module-info.java is correct for a service provider for a print service defined in the PrintServiceAPI module?

A : module PrintServiceProvider {requires PrintServiceAPI;exports org.printservice.spi;}

B : module PrintServiceProvider {requires PrintServiceAPI;provides org.printservice.spi.Print withcom.provider.PrintService;}

C : module PrintServiceProvider {requires PrintServiceAPI;uses com.provider.PrintService;}

D : module PrintServiceProvider {requires PrintServiceAPI;exports org.printservice.spi.Print withD18912E1457D5D1DDCBD40AB3BF70D5Dcom.provider.PrintService;}

Answer: A

Question 3

Why does this compilation fail?

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

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

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

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

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

Answer: D

Question 4

Given the code fragment:

How many lines of text does this program print?

A : four

B : one

C : three

D : two

Answer: D

Question 5

Which is a proper JDBC URL?

A : jdbe.mysql.com://localhost:3306/database

B : http://localhost.mysql.com:3306/database

C : http://localhostmysql.jdbc:3306/database

D : jdbc:mysql://localhost:3306/database

Answer: D

Page: 1 / 103

Total 515 Questions | Updated On: Aug 09, 2025

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